Why Does the Tesla Roadster Need to Fly? A Deep Dive into Musk's Wild Demo

A "Party Trick" Launch Event

According to The Verge reporters on site and the podcast recap, the event was delayed by another month beyond the original plan. The most eye-catching moment: the Roadster drove toward a row of Tesla vehicles (Model 3, Model Y, Cybercab, Cybertruck, and Semi), used cold gas thrusters to leap over the lineup, completed an aerial flip, and landed; in another demo, the car shot up a vertical ramp, briefly drove upside down, then tumbled off the edge and landed smoothly.

Andy Hawkins offered a precise analogy on the show: this isn't flying—it's Buzz Lightyear's "falling with style" from Toy Story. Audience members were asked to wear ear protection because the cold gas thrusters are extremely loud. The demo was genuinely cool, but Hawkins noted that by the next day the discourse had sobered up—people realized they might not be looking at a car at all.

Technical Breakdown: Thrusters, Fans, and a Missing Battery

The technology behind the demo wasn't fabricated out of thin air. The show mentioned two core devices: first, cold gas thrusters and ultra-high-pressure gas tanks derived from SpaceX; second, fan technology that creates enormous downforce to press the car onto the road surface—this is what made vertical climbing and upside-down driving possible. Fan cars have long been validated in racing engineering; Tesla's contribution was pushing it to a more extreme level.

Hawkins also mentioned that outlets like Hagerty interviewed Tesla engineering executives after the event, indicating there is real technical substance behind it. But the key red flag appeared at the bottom of the vehicle: online viewers captured frames from the video showing that the demo car's underbody was almost empty—the entire battery pack appeared to have been removed. The battery is the heaviest component of an electric vehicle; removing it means the car's weight distribution and propulsion efficiency in no way represent the production form.

A cold gas thruster is a propulsion device that uses high-pressure inert gas (such as nitrogen or helium) as propellant, ejecting gas at high speed through a nozzle to generate reaction thrust. Its specific impulse is far lower than that of chemical rocket engines, but it is simple in structure, fast in response, and capable of repeated ignition, making it commonly used for spacecraft attitude control. SpaceX's Dragon spacecraft is equipped with such thrusters. When used on a car, the thrust provided by ultra-high-pressure gas tanks is enough to alter the vehicle's attitude within seconds, but the tanks themselves are heavy and have limited gas capacity—they can only support very brief stunt maneuvers, not sustained driving.

The principle of a fan car is to use a giant fan at the rear to extract air from beneath the vehicle, creating a low-pressure zone that "sucks" the body toward the ground, generating downforce far exceeding the limit of tire grip. The 1978 Brabham BT46B F1 car used this design to win one race before being banned. The downforce generated by the fan can keep the tires in contact with the surface even on a vertical wall or upside down—this is the physical basis for the wall-climbing and inverted driving in the demo. But the fan consumes enormous power, is extremely noisy, and is highly sensitive to road surface cleanliness, making it impractical for everyday road use.

The Rocket Version: Invitation-Only, Not Street-Legal, No Delivery Guarantee

Configuration information updated on the official website after the event revealed that the car performing the stunts was the so-called "Rocket" version, available by invitation only and explicitly labeled "not legal for use on public roads." In other words, even if you were the richest person in the world, you couldn't simply place an order and buy one.

What surprised Hawkins even more were the website terms: the document was only two pages, and the fourth clause essentially stated that Tesla does not guarantee delivery of the version you ordered—or even any version at all. After nine years of delays, the manufacturer preemptively disclaiming liability in its own terms led him to say bluntly, "I've lost the ability to be shocked by Tesla, but this still shocked me."

A version for regular consumers will exist, but without thrusters or fans. The official line is a 0–100 km/h time under two seconds—still very fast, just not closely related to the "flying car" on stage.

"Not legal for use on public roads" typically means the vehicle does not comply with Federal Motor Vehicle Safety Standards (FMVSS) or cannot pass emissions, crash, lighting, and other regulatory certifications, and therefore can only be used on closed courses, racetracks, or for display purposes—it cannot be registered for road use. Similar cases include track-only cars and certain low-speed electric vehicles. Invitation-only purchasing bypasses the public order process, allowing the manufacturer to control who receives the vehicles and in what quantities, while also avoiding the compliance and after-sales responsibilities that large-scale production would entail. Together, these two arrangements place the Rocket version in the position of a "concept display piece" both legally and commercially, rather than a consumer product.

The Roadster from Nine Years Ago Is Dead

The original Roadster was Tesla's first car, proving that electric sports cars could find an audience; the second-generation Roadster unveiled in 2017 promised a 0–100 km/h time of under one second and 600 miles of range, with deliveries originally scheduled for 2020. Hawkins believes part of the reason for the delays is that Musk kept raising the bar for the engineering team: with each delay, another more outrageous spec was added—until it reached "it can fly."

The other reason is shifting attention. Model 3/Y, Cybertruck, Cybercab, and the Optimus robot successively took center stage, pushing the Roadster further into the background. Meanwhile, the Rimac, Pininfarina Battista, BYD's high-performance models, and high-performance EVs from Porsche, Audi, and Mercedes emerged one after another—the niche the Roadster aimed to occupy in 2017 had already been filled by others.

Hawkins stated clearly that the 2017 Roadster design is obsolete and that the prototypes built will not enter production. The new model features an angular, "cyber" design; he personally misses the smoother lines of the old version. As for range, the 600-mile promise has shrunk to about 300 miles, with almost no explanation.

Why Tesla Still Needs the Roadster

Looking purely at product logic, this car has no reason to exist. But Hawkins offered several layers of explanation:

• Synergy narrative with SpaceX: Musk has long been rumored to want to merge his companies; demonstrating technological linkages between the two is itself a signal.
• Marketing and morale: After facing sales pressure, the cancellation of tax credits, and public backlash, Tesla needs a show to maintain its image as a "pioneer of the future." Hawkins believes the Cybertruck wasn't successful enough, the Semi is just a truck, and the Cybercab still feels like a science experiment—the Roadster is the most suitable vehicle to use for a performance.
• Talent competition: Top engineers are flowing toward AI and robotics; a sufficiently cool launch event also serves as a recruitment ad.
• Interest-free funding: A large number of customers paid substantial deposits to reserve the vehicle; with deliveries continually delayed, this money effectively constitutes an interest-free loan to the company.

The show also mentioned that Musk called this the last Tesla designed for human driving. Hawkins is skeptical: the Model 3 and Model Y are still making money for the company, and a refreshed Model S or a cheaper entry-level EV could certainly appear in the future.

Editorial View: The Cool Is Real, and So Is the Misleading

The problem with this demo isn't the technology—it's the narrative. Tesla didn't show a car consumers can buy, yet let the public believe this is the Roadster they've waited nine years for. Hawkins compared such cars to F1 racers: they are real vehicles, but they were never born to do what a car is supposed to do on public roads.

At the end of the show, David Pierce asked Hawkins whether he'd be willing to get into the thruster-equipped Roadster for a ride. His answer was that he'd first check whether his life insurance covers it, then added: for The Verge, he'd do anything. That's probably the most accurate footnote to this launch event—thrilling enough, entertaining enough, but unrelated to a car you can actually buy.

One-line Summary

Tesla's Roadster launch used stunt performances to mask production delays—really a marketing and fundraising tool.

Paragraph Summary

Tesla's new-generation Roadster launch announced no production timeline but showcased stunts including wall-climbing, driving upside down, jumping, and flying over a row of cars. The Vergecast hosts and editors pointed out that the demo Rocket version uses SpaceX cold gas thrusters and fan-generated downforce, but its underbody appears to have had the entire battery pack removed, so its weight and efficiency don't represent the production form. That version is invitation-only and not street-legal, and the website terms don't even guarantee delivery of any version. The 2017 second-generation Roadster design is obsolete, and range has shrunk from 600 miles to about 300 miles. The show concluded that the Roadster's real function is closer to a marketing tool, recruitment ad, and interest-free funding channel than a volume product.