Fisher-Price Shake 'n Go! DC Super Friends Joker Mobile Shake 'n Go Racers put the control of speed and power into kids hands Just shake it up to start the "engine" The more you shake it up, the longer it goes Hear cool phrases every time you let it go Collect all the Shake 'n Go DC Super Friends: Joker Mobile, Green Lantern Racer, Batmobile and Mr. Freeze Racer