Camera Orientation?

In stunt playground, walaber how did you get the camera to always be on the tail of the car? Im so clueless.... i tried setting the camera orientation to that of the car but thta didn't help. Autotracking doesn't help.

i calculate a "goal" point for the camera, based on the current camera angle. then I move the camera towards that point using a simple formula that always tries to split the difference between it's current location and the goal location.... if it's too far it has a limit on how fast it can move.