I rented Carbon...I got so bored of Most Wanted. It was a 5 day rental...I finished it in 6..playing only about an hour a day. It was surprisingly lame, as in easy. The races are easy, and the opponents are easier. Career mode doesn't really make sense. The upgrading is just stupid. For example, nitrous, there are four packages, but you unlock the last one (the best one) first. Because by finishing reward cards/challenge series, you can unlock the better upgrades first. The storyline doesn't really make sense to me though, because technically, there's no end lke most wanted. In my opinion, this is the worst game NFS has made in history. I'd rather spend my time playing Most Wanted.
ps. Autosculpt is so damn ugly