Leaps over short buildings in a single bound, is more powerful than a switch engine, is just as fast as a speeding bullet, walks on water if sea is calm, and talks to God.

“Even though the panel will not be large enough to power the entire car, it could provide enough power to switch the engine off and on when the car is stopped at a traffic light, ” he said.

Hybrid vehicles, such as Toyota's top-selling Prius, switch between a petrol engine and electric motor.