What Is an Exocar?
An exocar, short for exoskeletal car, is automotive minimalism taken to its logical extreme. Instead of hiding structure beneath layers of body panels, insulation, trim, and sound deadening, an exocar does the opposite. It exposes everything. The chassis is the body. Tubes, nodes, welds, suspension arms, and mechanical components are fully visible, often paired with open wheels, minimal aero surfaces, and little to no traditional bodywork at all.
In an exocar, there is no attempt to disguise what the vehicle is doing or how it is built. Load paths are visible. Suspension travel is obvious. You can watch the car work in real time. This transparency is not a styling gimmick. It is the entire point.
At their core, exocars reject the modern automotive obsession with weight, isolation, and perceived refinement. They exist to do one thing exceptionally well: convert energy into motion as efficiently, directly, and viscerally as possible. No doors. No sound deadening. No luxury systems. No unnecessary mass. Just a frame, a drivetrain, four tires, and the human sitting at the center of it all.
While a small number of exocars have been produced commercially, the soul of the category lives almost entirely in custom builds, kit cars, and garage-born projects. These are not mass-market vehicles and they are not meant to be.
Where Exocars Came From
The philosophical roots of exocars trace back to one enduring idea that has shaped motorsport for decades: performance is more about removing weight than adding power.
Long before turbocharging arms races and horsepower wars, engineers understood that mass was the enemy. Colin Chapman famously distilled this into a simple principle: simplify, then add lightness. While the industry moved on toward safety, comfort, and mass production, that philosophy never truly disappeared. Exocars are its most honest modern expression.
Early minimalist sports cars laid the groundwork. Vehicles like the Lotus Seven stripped away everything that was not essential to driving. But modern exocars go further. They remove the very concept of a body, replacing it entirely with an exposed spaceframe or tube chassis.
High-profile machines like the Ariel Atom and KTM X-Bow proved that an exoskeletal road car could exist and could deliver extraordinary performance. But their price tags pushed the idea back toward its natural home: the enthusiast garage. From there, the movement exploded.
Builders began taking common donor cars and either transplanting their mechanical components into tubular frames or cutting the cars down to their structural core and rebuilding them outward. What emerged was a parallel automotive ecosystem. One that blurred the line between race car, kit car, and mechanical art.
Why People Build Exocars
The appeal of an exocar is not subtle, and it is not theoretical.
First, there is power-to-weight. Remove hundreds or even thousands of pounds from a vehicle and the physics change immediately. Acceleration becomes violent. Braking distances shrink. Direction changes feel instantaneous. Cornering loads increase without the need for exotic suspension or tire technology. An exocar does not need massive horsepower numbers to feel fast. It simply is fast.
Second, there is the driving experience. Exocars place nothing between the driver and the machine. You feel airflow, chassis flex, suspension movement, and tire noise in real time. Inputs are immediate and consequences are obvious. The sensation is closer to riding a motorcycle than driving a conventional car, except with four contact patches and a minimal protective structure around you. Every input matters, and every mistake is felt.
Third, there is the builder mentality. Exocars attract people who want to understand how machines work rather than simply consume them. Whether assembling a kit or fabricating from scratch, the act of building is inseparable from the enjoyment of driving. The finished car is not defined by trim levels or factory presets. It reflects the priorities, skills, and philosophy of its creator.
Finally, there is the performance-per-dollar equation. A well-built exocar can embarrass far more expensive vehicles on track while costing a fraction of the price. The tradeoff is comfort, weather protection, and social acceptability. For the right audience, that trade is not just acceptable, it’s the whole point.
How Exocars Are Built
There are two dominant paths to building an exocar, and both reflect the same underlying philosophy.
The first is the kit-based approach. In this scenario, a manufacturer or the hobbyist designs a tubular chassis intended to accept the drivetrain, suspension, and steering components from a specific donor car. The builder strips the donor completely, retaining only the necessary hardware, then installs those components into the new frame. Suspension geometry and mounting points are pre-engineered, reducing complexity while still demanding mechanical competence, patience, and time.
The second path is full custom conversion. Here, the builder takes an existing car and removes everything deemed dead weight: roof, doors, body panels, glass, and interior. What remains is then reinforced with a custom exoskeletal frame that restores rigidity, provides rollover protection, and creates a new visual identity. This method allows virtually any vehicle to become an exocar, but it requires advanced fabrication skills and a deep understanding of structural engineering.
In both cases, the end result is the same. A tubular frame. Exposed suspension. Minimal seating. A drivetrain no longer burdened by excess mass. The vehicle becomes mechanically honest in a way modern production cars rarely are.
The Downsides No One Hides
Exocars are uncompromising by design, and that reality cuts both ways.
Weather is not optional. Rain, heat, cold, dust, and debris are all part of the experience. Long drives are physically demanding. Storage space is effectively nonexistent. Entry and exit often require climbing over frame rails.
Safety is also a serious consideration. While many exocars feature robust roll structures, they lack engineered crumple zones, airbags, and the layered passive safety systems of modern production vehicles. They demand attentiveness, skill, and respect in the same way motorcycles do.
Legality varies widely. Registration, emissions compliance, and inspection requirements differ by jurisdiction, and some builds are realistically track-only. Builders must understand local regulations before the first cut or weld is made.
None of this is hidden from people who build exocars. In fact, most consider these limitations part of the appeal.
Why Electric Power Changes Everything
Electric drivetrains and exocars are a near-perfect match.
Electric motors deliver maximum torque from zero rpm. In a vehicle weighing well under a ton, that torque becomes explosive. Acceleration that would feel impressive in a full-bodied EV becomes borderline absurd when paired with a lightweight exoskeletal chassis.
Batteries, often criticized for their mass, become assets when placed low and centrally within a lightweight frame. The center of gravity drops dramatically. Handling sharpens and stability improves. And because overall vehicle mass is so much lower, efficiency often increases rather than decreases.
Electric drivetrains also simplify mechanical layout. No multi-speed transmissions, fewer moving parts, and less packaging complexity. Builders can focus on frame design, cooling, and weight distribution instead of exhaust routing and drivetrain complexity.
Perhaps most importantly, electric exocars feel alive. The absence of engine noise makes speed feel surreal. The vehicle surges forward instantly, without vibration or delay. Skepticism tends to disappear the moment someone experiences full electric torque in a stripped-down chassis.
Converting EVs Into Exocars
This is where the concept becomes the most practical and, for many builders, the most sensible.
Many modern EVs are built around skateboard-style platforms, with the battery pack forming the structural floor and motors mounted at the axles. This architecture makes them ideal candidates for exocar conversion.
Instead of swapping drivetrains as in the typical sense of the word “conversion”, builders remove the upper body entirely and construct an exoskeletal frame around the existing electric platform. The battery, motors, inverters, and control systems remain intact. What changes is everything above them.
Remove thousands of pounds of body structure, glass, insulation, and interior, and the performance equation shifts dramatically. Power-to-weight skyrockets. Thermal performance improves due to open airflow. Range can even increase despite aggressive driving.
These builds demonstrate something important. EVs are not closed systems. They can be hacked, reimagined, and rebuilt just like internal combustion cars. In many ways, they are better platforms for extreme performance once freed from unnecessary mass.
Far from making EVs quieter or more polite, this process is about unleashing what electric drivetrains are capable of when stripped down to their core.
High-Profile Electric Exocar Examples
Despite the growing interest in electric exocars, only a handful of builds have reached genuine high-profile status. That scarcity reflects how early and technically demanding this space still is.
Two examples stand out because they meet the definition cleanly and provide concrete, verifiable evidence that electric exocars are viable, repeatable, and brutally effective.
The Electrocet (Tesla-Powered Exocet)
The Electrocet pairs the Exomotive Exocet tubular chassis with Tesla Model S electric drivetrain components. It remains the most thoroughly documented electric exocar build, with published data covering weight, battery configuration, and real-world performance.
Key specifications (verified where available, estimates noted):
- Chassis: Exomotive Exocet tubular steel exoskeleton
- Donor drivetrain: Tesla Model S rear drive unit
- Motor output: ~400–450 hp (estimated from Tesla rear large drive unit capability)
- Battery capacity: ~52 kWh (Tesla Model S modules)
- Curb weight: ~1,950–2,000 lb
- 0–60 mph: ~3.0–3.2 seconds
- Drive layout: Rear-wheel drive
- Battery placement: Low-mounted, central
The Electrocet demonstrates that combining a purpose-built exoskeletal chassis with a modern EV drivetrain yields extreme power-to-weight, a very low center of gravity, and sustained performance without mechanical complexity.
E‑ROY (Tesla Plaid Cyber Kart)
E‑ROY is an extreme electric exocar-style build derived from a Tesla Model S Plaid, stripped down to a largely exposed structure and configured as a minimalist, open kart.
Unlike the Electrocet, which begins with a dedicated exocar chassis, E‑ROY starts with a production EV platform and removes mass aggressively to prioritize outright acceleration and output.
Key specifications (verified where available, estimates noted):
- Chassis: Modified Tesla Model S Plaid platform with exposed structure
- Donor drivetrain: Tesla Model S Plaid
- Motor output: ~1,020 hp (Tesla Model S Plaid factory rating)
- Battery capacity: Not publicly disclosed for the conversion
- Curb weight: ~3,800–3,900 lb after major mass removal (reported)
- 0–60 mph: ~1.8–2.0 seconds (reported drag testing)
- Drive layout: All-wheel drive
- Battery placement: Stock Plaid skateboard configuration
E‑ROY serves as a proof-of-extremity build, illustrating how electric drivetrains behave when mass, comfort, and conventional vehicle structure are reduced almost entirely.
High-Profile ICE Exocars
While electric exocars are still emerging, internal combustion exocars have existed long enough to establish clear benchmarks. These vehicles define what most people think of when they hear the term “exocar,” and they serve as the reference points against which newer electric builds are inevitably compared.
Ariel Atom
The Ariel Atom is arguably the most recognizable exocar ever produced. Built around a tubular steel spaceframe with exposed suspension and minimal bodywork, it prioritizes power-to-weight and driver feedback above all else. Across its many generations, the Atom has used high-revving Honda engines, turbocharged variants, and extreme track-focused setups, cementing its reputation as a road-legal machine that feels closer to a formula car than a traditional sports car.
KTM X-Bow
The KTM X-Bow approaches the exocar idea from a more aerodynamic and track-centric angle. Using a carbon-fiber monocoque rather than a traditional steel tube frame, it blends exoskeletal exposure with serious downforce and chassis rigidity. Turbocharged Audi-sourced engines power the X-Bow, and its design leans heavily toward circuit performance rather than road comfort.
Together, the Atom and X-Bow define the high-profile ICE exocar category. They prove that exposed structure, minimal mass, and extreme performance can coexist in commercially produced vehicles, setting the foundation for electric exocars to follow.
Exocars in Video Games
Exocars have even crossed into mainstream automotive culture through video games, most notably the Forza franchise. Games like Forza Horizon and Forza Motorsport tend to feature vehicles that represent distinct philosophies or engineering approaches, and the inclusion of an exocar places the category alongside supercars, race cars, and off-road icons.
The Exomotive Exocet has appeared in multiple titles:
- Forza Horizon 4 – The Exomotive Exocet Off-Road is featured as part of the Fortune Island expansion.
- Forza Horizon 5 – The Exocet Off-Road appears as a standard vehicle, including a special Forza Edition variant.
- Forza Motorsport 7 – A performance-focused Exomotive Exocet Sport V8 XP-5 variant is included.
These appearances sit alongside other commercially produced exocars that have become familiar reference points for the genre in video games, most notably the Ariel Atom and KTM X-Bow.
While these digital versions are not electric, their presence reinforces the relevance of exoskeletal cars as a legitimate performance category. They also introduce the exocar concept to a far wider audience, many of whom may encounter the idea first in a virtual setting before seeing one built in the real world.
The Amped Take
Exocars represent something the modern auto industry is quietly losing: mechanical honesty.
They do not pretend to be practical. They do not chase mass appeal. They exist for people who value sensation over screens and physics over polish.
Electric exocars push that philosophy even further. They prove that electrification does not have to mean isolation or disengagement. When paired with extreme weight reduction, electric power becomes raw, violent, and deeply engaging.
This is uncompromised electrified performance in its purest form.
Citations
- Exomotive – Electrocet project overview (chassis and drivetrain basis)
- RCN Magazine – “Electrifying Potential: Building an Exocet with a Tesla Powertrain” (battery capacity, curb weight, acceleration)
- Tesla – Model S Plaid official specifications (motor output, drivetrain configuration)
- Teslarati – Coverage of stripped Tesla Model S Plaid ‘Cyber Kart’ build (weight reduction)
- TechEBlog – Reporting on E‑ROY drag testing results
