In "Lethal Inspection", Professor Farnsworth asks for his wheelchair:
- Farnsworth: I have pain in joints I had removed a century ago! Bender! bring me my soft chair with the wheels.
- Bender: Your wheelchair?
- Farnsworth: I don't need a wheelchair! The one with the wheels
But earlier episodes established that hover technology had made the wheel obsolete. For example, in "The Honking":
- Bender: Somebody tried to run me over. And not with a normal hover-car. It crept along the ground on round, rubber feet, like a wolf!
So, why doesn't Farnsworth have a hover chair (like in Wall-E) instead of a wheelchair?