what that guy said, cargame is good if you can avoid the wrecks :P
quite alot of the time i get turned arround and just carry on and people crash enough for you to still finish ok.
in races like that is more about consistency and managing to stay on the track.
if its the car control aspect youre looking to improve, learn to drift.
its amazing how much being able to slide the car enables you to both stop the back end stepping out and catch it when it does