Hovercar

Hovercars are cars that move around by hovering above the ground. It is unknown who invented them, though it is known that Professor Hubert J. Farnsworth designed some of them. In the year 3000, mankind have grown so extremely dependant on hovering, that they believe that it is impossible to travel any other way.

Appearances
(Since hovercars appear in all episodes, only episodes that reveal new information or specifically deal with hovercars should be included.