Niiiice
Ok review time
Graphics: Simple but effective, try putting more detail on the track.
Style: Never seen anything like this before, superb idea
Sound: You really need some sounds, maybe engines reving as they go past start line and brake sounds on a couple of corners and background music is always nice.
Violence: Finally a submission without some type of mild violence
Interactivity: Very nice game, good version of a drag and drop game.
Humour: No jokes but it would be nice to see something like "U R teh k00l" when you finish it, always gets humour points.
Overall: Room for improvement as always but above average.