Noted at we make money not art: Vehicle piloted by a fish:

Seith Weiner has created a vehicule piloted by a fish and propelled by 2 drive wheels, each driven by its own servomotor. The fish steers the vessel by its movements. A camera above the cockpit tracks the movements of the Terranaut (that’s the name of the fish-pilot). Its location is then wirelessly transmitted to a remote processing station where the data is converted into motion commands and transmitted back to the motion controller of the vehicle.