Tesla's new Roadster performed aerial stunts in McGregor, but experts question whether its promised capabilities will reach public roads. At a SpaceX rocket testing site, the car launched off a ramp, turned in the air and landed onstage. Cold gas thrusters powered the acrobatics, while a suction system held the vehicle against a ramp as it drove upside down. Tesla demonstrated acceleration from zero to 60 miles per hour in less than a second and touted speeds above 230 miles per hour. Elon Musk promises production in 2028, but Tesla acknowledges the car will not fly drivers through their commutes. Automotive safety experts say states could take time to allow such vehicles, and some observers questioned the demonstration's authenticity. Law professor Bryant Walker Smith said the demonstration vehicle would not be coming to public roads in 2028. Tesla is taking orders for Roadster versions, including an invite-only rocket upgrade it says can make the car fly. That upgrade is not approved for public roads. Down payments start at $50,000, with no final pricing announced.