There are a lot of tracks to choose from, but all the ones I tried were basically simple loops. Choosing a car is, I think, just choosing the color, but it's hard to tell. I'd like more feedback on-screen to show how I'm doing, maybe a preview of the track, rpms, particle effects if I'm hitting something, ....
Controls didn't feel very physics-y, but mostly got the hang of them. Placing felt more like luck than skill, but maybe that's just my lack of skill. ;)