Toyota has filed for patent protection of an unusual flying car design that uses the same drive mechanism for road and the air. According to TransportUp, the "Dual Mode Vehicle With Wheel Rotors" uses the rotor hubs as wheels when the device is on the ground. The rotors fold into the wheel allowing the vehicle to roll freely. Steering and braking would be accomplished with differential power to the individual wheel rotors, which would be fixed in a single position on the ground.
This is a companion discussion topic for the original entry at https://www.avweb.com/recent-updates/business-military/toyota-patents-flying-car-design