By Headlines Team

Tesla’s latest Roadster looks like something from a science fiction movie. During its October 15, 2026, unveiling, the electric sports car drove upside down, spun through the air, and used rocket-style thrusters to land. Developed with SpaceX, the demonstration offered a glimpse of what Elon Musk has described as the future of flying cars.

But there’s a major difference between making a car leave the ground and making one that people can legally drive and fly.

Tesla has described its invite-only, single-seat Rocket configuration as having a full flight system. However, the company also acknowledges that the version is not approved for public-road use. Production of the next-generation Roadster is planned for 2028.

The demonstration has brought renewed attention to a challenge federal regulators encountered more than a decade ago. Lerner & Rowe, a personal injury law firm, is highlighting a 2011 federal decision involving Terrafugia, a company that developed an aircraft capable of driving on public roads.

Terrafugia’s experience reveals something easily overlooked in the excitement surrounding flying cars: a vehicle designed for both roads and the air may need to satisfy two very different sets of safety expectations.

The Flying Car That Faced Four Federal Safety Standards

Long before Tesla demonstrated its new Roadster, Terrafugia was working on a vehicle called the Transition.

Unlike a conventional aircraft, the Transition featured folding wings that allowed it to travel on public roads. Its owners could theoretically drive to an airport, take off, land elsewhere, and continue their journey by road.

In 2006, Terrafugia asked the National Highway Traffic Safety Administration (NHTSA) whether the Transition would legally qualify as a motor vehicle.

The agency said yes.

Even though the company expected road travel to account for just 18% of a typical 350-mile journey, the vehicle was designed to operate on public highways. That was enough for NHTSA to determine that federal motor vehicle safety standards applied.

The decision created an unusual engineering problem.

Aircraft manufacturers work to minimize weight, while automotive safety requirements often involve equipment that adds weight. Designing a vehicle to perform both functions meant finding ways to satisfy requirements that were not originally developed with flying cars in mind.

In June 2011, NHTSA granted Terrafugia temporary exemptions from certain requirements involving four safety standards: electronic stability control, automotive glazing, advanced airbags, and tires and rims.

Each came with its own technical and financial challenges.

How Ordinary Car Safety Features Created Extraordinary Costs

One of Terrafugia’s biggest challenges involved equipment that most drivers rarely think about.

Electronic stability control helps prevent drivers from losing control during sudden turns or slippery-road conditions. It’s an important safety feature in modern vehicles.

For the Transition, however, adding a conventional stability-control system would increase weight by approximately six pounds.

Terrafugia estimated that removing an equivalent amount of weight elsewhere would require $87,000 in development spending and raise the cost of each vehicle …read more

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