Use the arrow for the red car, and W,A,S,D for the yellow one! To you can play until one (or both) gets bored! (I'll make a different one where you have to get to a certain amount of laps.
It is based on a project from a book. The only thing from the Scratch Library is the music. WARNING: Stay away from the walls, you might get stuck. If you do, try to use one of your keys to get out.