Funny you mentionned it, i was just checking it out yesterday and thought about posting it !
sounds like a truly amazing game. You can buy, sell, modify and paint to your will. The cars are all the Americans classics from the 30's to the 70's. You ca do street race, drag, circuit and many more i don't rememer.
Problem is, it can only be played online (so i've read) and there's a 10$us /month registration fee. No way i'm gonna pay a monthly fee for a game! I've got enough of those already!