Gen3rator is a very unique robot! Did you know that turning Mindstorms motors generate electricity? Well, now you know! Turning the hand-generator (motor) will transmit the electricity through the long wire and turn the motor in the vehicle! Some have already tried these systems, but I optimized mine. I used large tires to increase distance traveled in one revolution of the motor, and also geared it up 1:3 to speed it up 3 times faster!