A fun little game that has alot of potential. A random map generator, at least two other levels, or if you have the programs a level editor perhaps would be a nice improvement. It could definitely use a new set of sounds. Overall a great little game. If you could possibly import it to work on an ipod I could see it going very far in sales, implement motion controls or a pad either works. It's one of those addictive little games that sell on the app store. This could be pretty big.
Nothing is quite as satisfying as making one of the cars do a triple mctwist, land on the front end, do two front flips, barrel around the corner, and land perfectly.