When you first play the game, then you'll notice that you can only pick two cars types of vehicles, the trucks, and the vans. Which while cool, they both kinda suck. To unlock The muscle cars, and the sports cars you must compete in a LOT of races, and mini games to raise your exp bar. When Your exp bar is on level 7, then You will unlock the muscle cars, and when you get it to level 10 you will unlcok the sports cars.
Then you can make a really fast car, and give everybody else really, really, slow vans, and beat them in a second!
Added by: cheating-is-good Dec 4th 2007, ID#28483