Cool game idea, but once you've played it once, you've played it as much as you need to. The car controller is my favorite part, but it still has some issues. Clipping the wall a little causes you to come to a full stop, and you always go to the exact same place. Some variation in where you go and some randomization of the map would go a long ways to increasing replay value.
With more time invested in development, this could be a pretty fun driving game.