I know others have mentioned that the force should be generated from in front of the center of mass, but honestly I quite enjoyed figuring out how to be precise with the rockets as they are. Once you get the hang of it the drifting is quite a lot of fun. The one thing I would have liked to have seen is a map with wider lanes, possibly slower curves.
The fact that this is an online multiplayer is mind blowing to me. And the art-style you are developing is really gorgeous! Well played!