Yes, Stunt Car Racer was great.
Shadowcat : I agree with you, the point in Trackmania is not to have collision with other cars. It's a deliberate and interesting choice, especially when you've got a lot of cars online.
NSR is going to be different from Crashday too, since Crashday has weapons. NSR is really about pure piloting, in the classical way, but with stunt tracks. I found that Crashday was really horrible to play. Before this game came out, I couldn't tell what it was about, and when I tried it, I felt the same problem. Doing a good receipie is not about adding a lot of attractive things and mixing them without taste.