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LUCID MOTORS
Vehicle Architecture
&
Concept Engineering

lucid air sapphire.png
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OVERVIEW

In 2020 I was fortunate to join Lucid Motors, helping bring the ground-breaking Lucid Air to production and leading the integration of the world’s most powerful EV drive unit to launch the Lucid Air Sapphire, the world’s highest performance EV. I gained deep experience in EV system architecture, body integration and packaging, co-leading the package development of the recently launched Lucid Gravity SUV, and then becoming the first engineer to start work on the 2026 Lucid Midsize Platform, an all-new EV platform with 3 distinct top hats, combining class leading range, space, performance and autonomy. I loved leading the cross-functional problem solving required for these complex products, balancing all of the key product attributes to lead teams through ambiguity to alignment, with a detailed, positive and collaborative approach.

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RESPONSIBILITES

  • Advanced vehicle architecture and concept engineering development.

  • ​Leading teams in solving complex cross-functional vehicle engineering and packaging issues.

  • Initial product concept, engineering feasibility and strategic business case development, including complete EV vehicle platform, trim lineup and individual product feature analysis.

  • Future automotive technology innovation and integration analysis.

  • Deep collaboration with engineering technical experts, product marketing, strategy, design and manufacturing.

  • Additional support of Chief Engineering and Program organizations with vehicle development.

  • Leading cross functional engineering, design and business teams and presenting strategic recommendations to executives.

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KEY ACHIEVEMENTS​

  • ​Launching the Lucid Air - Motor Trend Car of the Year 2022

  • Launching the Lucid Gravity 

  • Creating best-in-class vehicle architectures for performance, efficiency, space and autonomy

lucid air sapphire platform.png
lucid air sapphire drive unit.png
lucid gravity occupant overview.jpg
lucid future vehicles.png

SKILLS:

  • Product and Project Management

  • Platform Development

  • Technology Integration

  • Systems Engineering

  • CATIA · Computer-Aided Design (CAD)

  • Product Design

  • Vehicle Architecture

  • Team leadership

  • Communication

  • Cross-functional design integration and problem solving

  • Mechanical Engineering R&D

  • Project leadership from concept through detailed design & analysis and manufacture

  • Design for Manufacture

  • GD&T and statistical tolerance methods 

  • Business Case & Project Plan Development

  • Risk Management

  • AGILE methods

  • Root Cause Analysis

  • Systems thinking methodology​

 

TOOLS

  • CATIA V6

  • JIRA/Confluence

  • Office Suite/Google Suite

Defining a successful vehicle architecture:

  • Product – meeting the customers expectations with surprise and delight.

  • Business – did the unseen work of vehicle architecture delight the user and deliver sales, growth and profits for the company?

  • Manufacturing – were the vehicle architecture decisions enablers of ergonomic, simple manufacturing processes to save time and cost?

  • Quality and Reliability – was the vehicle successful for the long term in it’s application, did customers keep it for far longer than expected because the architecture and system integration reduced occurrence of quality issues and enabled robust designs?

VEHICLE ARCHITECTURE - PROBLEM SOLVING EXAMPLES

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Closures architecture - liftgate spoiler section optimization

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Challenge: Achieve large rear visibility and manufacturable liftgate design within design surface aspiration

Liftgate optimization sketch.png

Liftgate & spoiler optimization study for a generic EV

Midsize motortrend rendering.jpg

Lucid Midsize concept rendering

Source: MotorTrend

Approach: Optimized CHMSL height, glass mounting and spoiler structure

liftgate spoiler initial section.png

Initial Concept Section

Liftgate spoiler section 3D.png
liftgate spoiler section 3D overview.png

3D Overview

Result: 

  • Minimized CHMSL height (in-house light strip development)

  • Maximized rear visibility by minimizing liftgate section sizes

  • Reduced structure mass & cost and improved NVH performance

  • Enabled closures hardware optimization (strut & hinge)

  • Prioritized manufacturability (lower glass mounting)

  • Supported design surface aspiration (steep backlite angle)

  • Aligned closures hardware & vehicle attributes (large opening)

liftgate section optimized.png

Proposed Concept Section

liftgate section optimized 3D.png
liftgate section optimized 3D overview.png

3D Overview

​Occupant Package Layout - Ergonomic Optimization

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Challenge: Optimize occupant ergonomics and maximize usable interior occupant volume

occupant layout overview.png

CAD overview

Wheel centre to ball-of-foot x-distance minimization

Micro car package ideation exercise.png

Micro-car package ideation exercise

Source: H-Point – The Fundamentals of Car Design & Packaging (2nd edition) (Macey & Wardle) (Design Studio Press, 2014)

Above are some examples of occupant package layout ideation for a microcar, where a steer-by-wire system (or “forward-control” layout) can enable a very spacious cabin by pushing the occupant as far forward as possible. This requires safety compromises (crush length reduction) and ergonomic trade-offs with foot swing zones and ingress-egress.

The third example shows a “back-to-back” occupant layout which can enable a sloping rear roofline.

Approach:

  • Minimize wheel centre to ball-of-foot distance

  • Conduct ergo-buck clinics

  • Tune pedal layout (dead pedal an RHD pedal)

  • Optimize crash load path and BIW structure

Occupant package approach x distance.jpg

Initial Concept

wheel envelope development.png

Tire envelope creation

Source: H-Point – The Fundamentals of Car Design & Packaging (2nd edition) (Macey & Wardle) (Design Studio Press, 2014)

initial concept occ pack 3D.png

3D Overview

foot swing clearance overview.png

Foot swing clearance overview

Source: H-Point – The Fundamentals of Car Design & Packaging (2nd edition) (Macey & Wardle) (Design Studio Press, 2014)

Result: 

  • Optimized ergonomic comfort

  • Optimized structural sections

Minimized wheel-centre to ball-of-foot distance by:

  • Optimizing dead pedal angle and heel position through ergo-buck user clinics

  • Created & tested concept for RHD A-pedal arm in ergo buck

Optimized tire envelope by:

  • Correlated simulated tyre envelope (kinematic motion envelope) with durability test data

  • Created risk matrix to understand occurrence & severity of kinematic motion

  • Gave input to optimize chassis architecture to minimize tyre envelope (turning circle, Ackermann, wheel & tyre selection, wheel travel, compliance modes

Optimized BIW section sizes by:

  • Gave input on frontal crash load path direction to minimize section thickness at dead pedal toe point

  • Minimized wheel house inner section thickness through material and stiffness iterations

  • Gave input to hinge pillar section size for small overlap crash load case and refining driver foot-swing zones

occupant package proposed concept x distance.jpg

Proposed Concept

3D overview optimized torque box section.png

3D Overview

​ADAS Architecture - long-range radar integration

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Challenge: 

  • Ensure radar performance and manufacturability within fascia limits

  • Minimize impact to styling, aerodynamic and thermal cooling attributes

ADAS long range radar overview.jpg

Long range radar position study for a generic EV

Approach:​ Developed mounting concept with adjustable calibration and validated paint thickness tolerance

ADAS initial concept.png

Initial Concept

ADAS initial 3D overview.png

3D Overview

Result: 

  • Enhanced long-range radar accuracy

  • Optimized aerodynamic performance (30% inlet area increase)

Optimized long range radar performance by:

  • Creating a concept to enable rigid mounting & calibration adjustment

  • Understanding fascia paint thickness limitations for radar signal interference

  • Collaborating with manufacturing and supplier teams to optimize radar/paint interaction

Optimized vehicle aerodynamic & cooling performance by:

  • Minimizing inlet area obstruction

  • Gave input on package environment for aerodynamic simulation of pressure losses

Adas lrr proposed concept.png
adas lrr proposed concept 3D.png
lucid air aerodynamics.png

Proposed Concept

3D Overview

Lucid Air Aerodynamics

Powertrain Architecture: Drive Unit Integration

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Challenge: 

  • Package drive unit in existing rear subframe structure, progressing the concept from prototype to production.

initial dual rear drive unit.jpg

Initial Concept

Source: Lucid Motors

Approach:​ 

  • Analysed & validated load inputs for drive unit motion and package

  • Created kinematic motion envelope and new mounting architecture, optimizing for an extremely tight package environment

  • Completed simulation and validation activities of drive unit motion in challenging durability and track-use environments

  • Optimized cooling channel package in drive unit casting

  • Optimized HV and LV harness routing and position, adding mount and strain relief features

  • Re-packaged rear oil pump assembly

  • Re-developed rear subframe front shear plate structure and mount design for manufacturing & assembly considerations

sapphire drive unit section.jpg
sapphire drive unit perspective view.jpg
lucid air sapphire platform.png
sapphire.jpg

3D Overview

Result: â€‹

  • Created a feasible & manufacturable drive unit package for the world’s most powerful

  • Implemented lessons learned for a running change of rear subframe structure, lower diffuser panel and NVH material tooling to enable Air platform commonality, with no changes required to BIW trunk tooling

  • Ensured manufacturability and service accessibility through CAD virtual build simulation

  • Led the team to delivery of the award winning Lucid Air Sapphire to production

Powertrain Architecture: Drive Unit Integration

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Challenge: 

  • Provide input for development of all new drive unit as vehicle architecture lead

  • Assist and enable the powertrain team to develop the most efficient, power dense and cost-effective drive unit for the Lucid Midsize Platform application

lucid drive unit exploded view.jpg

Initial Concept

Approach:

  • Analysed powertrain components and architecture opportunities, including gearbox and differential layout (parallel/dual/tri-axis), inverter position and ancillaries packaging

  • Developed initial mounting architecture concept in vehicle environment

  • Recommended drive unit orientation, position, half-shaft layout and concept package for drive unit architecture development

Result:

Created a concept for best-in-class powertrain NVH refinement by:

  • Optimizing a constrained environment with lessons learned from durability testing (HV/LV/thermal routing)

  • Creating a package concept for mounting locations as input for topology optimization simulation

  • Creating and optimizing 3D drive unit motion envelope

  • Minimizing frontal crash load stack up by giving input to design breakaway points for peak load cases

  • Ensuring manufacturability and service accessibility through CAD virtual build simulation

lucid space concept.jpg
formula e drive unit.jpg

3D Overview

Source: lucid space concept

Powertrain Architecture: Dual Isolation Mount Concept

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Challenge: 

  • Package drive unit in constrained space

  • Minimize structural and acoustic NVH propagation

dual isolation initial concept.png

Initial Concept

Approach:

  • Created dual isolation concept with topology optimization input

Result:

 Created a concept for best-in-class powertrain NVH refinement by:

  • Optimizing a constrained environment with lessons learned from durability testing (HV/LV/thermal routing)

  • Creating a package concept for mounting locations as input for topology optimization simulation

  • Creating and optimizing 3D drive unit motion envelope

  • Minimizing frontal crash load stack up by giving input to design breakaway points for peak load cases

  • Ensuring manufacturability and service accessibility through CAD virtual build simulation

dual isolation 3D overview.png

3D Overview

Electrical Architecture: Body Control Module package development

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Challenge: 

  • Provide input for development of all new in-house developed electrical control unit (ECU) as lead vehicle architect

  • Enable a high-performance & low-cost of assembly solution

BCM initial concept.png

Initial Concept

Approach:

  • Analysed LV controller requirements for system support, power, number of connections, environmental protection, thermal management, mounting & structural isolation and EMC/EMI

  • Recommended integration of control items in single module

  • Developed a concept to reduce wire harness length and amount to improve vehicle assembly takt time

  • Provided manufacturability and serviceability access pathway simulation with virtual build techniques

Result:

  • Created a unique concept for body controller packaging and integration to minimize wire harness routing requirements between front under-hood area of vehicle and cabin

BCM 3D overview.png

3D Overview

cybertruck reference.jpg

Benchmark Overview

Tesla Cybertruck EE Architecture

Source: thedriven

rivian ee architecture.jpg

Benchmark Overview

Rivian EE Architecture

Source: insideevs

TECHNOLOGY INTEGRATION - PROBLEM SOLVING EXAMPLES

Chassis Architecture - Steer by Wire Integration

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Challenge: 

  • Integrate steer-by-wire system within EV platform

Approach:

  • Complete package studies

  • Analyse business case and recommend implementation roadmap

  • Optimize integration

Result:

  • Identify cost and attribute benefits for next-gen EV architectures with by-wire technology integration

Key Achievements:

  • Identified vehicle level advantages for steer-by-wire system integration

  • Completed package layout study in vehicle environment

  • Developed business case to understand investment & payback period & inform introduction target date

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​

steer by wire overview 1.png
steer by wire overview 2.jpg

Steer-by-wire system

Source: Nexteer (Retrieved 10/16/2025)

steer by wire overview 3.png

Steer-by-wire overview

Source: ResearchGate (Retrieved 10/14/2025)

Components removed: Steering column, steering intermediate shaft

Replaced with: DC Motor, angle sensor, electronic module

Opportunities presented:

  • Software defined experience - variable steering ratio

  • Fast ratio @ low speed (parking lot manoeuvres)

  • Slow ratio @ high speed (vehicle stability)

  • Autonomous-driving native (software & redundancy)

  • Occupant package set-up (steering wheel position & accommodation, phase-angle limitation removed)

  • OTA updatable

  • Manufacturing (takt-time reduction & marriage simplification)

  • Quality

  • Safety (frontal impact)

  • Packaging

Chassis Architecture - Brake by Wire Integration

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Challenge: 

  •  Integrate brake-by-wire system within EV platform

Approach:

  • Complete package studies

  • Analyse business case and recommend implementation roadmap

  • Optimize integration

Result:

  • Identify cost and attribute benefits for next-gen EV architectures with by-wire technology integration

Key Achievements:

  • Identified vehicle level advantages for brake-by-wire system integration

  • Completed package layout study in vehicle environment

  • Developed business case to understand investment & payback period & inform introduction target

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​

electro-mechanical brake system architecture.png
brake by wire overview.png

Electro-mechanical brake system architecture

Source: MPDI (retrieved 11/4/2025)

Brake-by-wire overview

Source: ZF (retrieved 10/14/2025)

Components removed: Brake line (rigid & flexible), brake line unions, hydraulic calliper actuation, ESP module, brake pedal travel (reduced)

Replaced with: Electronic calliper actuation (EPB style ball screw, electronic modulator/actuator

Opportunities presented:

  • Manufacturing (takt-time reduction)

  • Underbody protection

  • Quality & Reliability

  • Manufacturing

  • (takt-time reduction & marriage simplification)

  • Quality & Reliability

  • Manufacturing & Service

  • (brake reservoir fluid fill eliminated)

  • NVH (ABS brake pedal feedback, isolation)

  • Range (brake drag reduction)

  • Software-defined brake control

  • (traction control integration, regen brake blending, safety, autonomy)

  • Packaging (under-hood)

  • Occupant package (wheel centre to ball-of-foot distance)

  • Safety

PRODUCT MANAGEMENT EXAMPLES

Problem solving methodology

problem solving process.jpg

Micro Car Platform - Market Progression Analysis

Micro car product study.jpg

Autonomous Vehicle Platform - Market Progression Analysis

Autonomous vehicle platforms product study.jpg

REFEREES:

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Dr. James Hawkins - VP, Engineering, Lucid Motors

jameshawkins@lucidmotors.com

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Adam Thipphavong - Manager, Advanced Product Engineering, Lucid Motors

adamthipphavong@lucidmotors.com

Contact:

Email: g.legget.gt@gmail.com

Phone: +1(424)350-6520

LinkedIn: george-legget 

2025 Legato Industries

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