Hold the spacebar to make the cars move. I recommend letting go of it when they hit the stop sign, then holding it when they reappear at the beginning. If you don't, one will probably end up leaving the other in the dust!
My brother loves cars so I made him a game. Mine is the one at the bottom, his is on the top. This is a really simple code that I made about 7 months ago, and it was for my brother, so it's kinda boring... ...but try it! *May 2018: It's really boring and glitchy, I agree, but i don't plan on fixing it.* *Feb 2020: I actually might try to fix it up now that I think about it, since it's SOOO cringy. Maybe I'll make an updated version. Wait, actually, this is so simple that I'll just fix it right now.*
