Forza Motorsport 3 Help...?

I have recently bought Forza Motorsport 3, and there is these experience points (basically the credits when you win a race) which if you have enough you move up a level, and each time you move up a level you are rewarded with a car. I was really disappointed when I bought a car for alot of money then later, got rewarded with the same car for free, so does anyone have a list with the cars you rewarded and the levels you unlock them at, I have looked everywhere and cannot find anything, I would really appreciate if you answer



Thanks, (:Forza Motorsport 3 Help...?
I feel your pain. This should keep ya from making the same mistake again. http://forums.forzamotorsport.net/forums鈥?/a>