All you need to do is come in 3rd and you get some credits to upgrade your car. The 3rd level is impossible because the track is wider than the screen so you have no idea where to go. Everything looks the same and there's no obvious path. If you run into a wall or take a wide course, you lost. There's no way to win this game if you don't race a perfect race.
Why is the Turbo Y and not X? What a completely useless key mapping, fucking retarded developers.
It's not terrible and it's something to play, but I'd be pissed if I actually paid for this.