48 Roller
this unusual vehicle was designed for a single being to operate. Resembling a large wheel, the 48 Roller used a huge tire to move itself along. A pair of small jet engines, mounted near the base of the vehicle and perfectly balanced, provided propulsion. The rider sat inside the main wheel, and controlled the vehicle with a combination of handbars and their own balance. Speed, braking, and hard turns were accomplished using the built-in controls, but many turns could be accomplished by simply leaning into them.