The Budweiser Rocket is an American 3-wheeled land vehicle, generally resembling the 1970-era Blue Flame land speed record holding vehicle in appearance, powered by a liquid rocket engine with an extra solid-fuel booster from a Sidewinder missile, that has been claimed as being the first vehicle to have broken the sound barrier on land. The original forerunner to the vehicle was the "SMI Motivator" which was damaged badly enough to require a replacement, which in time was called the "Budweiser Rocket".