Really nice game, although I would want more cars and the AI is a little OP, but overall really enjoyable. Are you going to release a multiplayer version?
I appreciate your interest in the game. First of all new cars are coming in the next update, also I am currently in the process of balancing the AI after complaints, and lastly I have tried implementing multiplayer when it was in a really alpha stage and it didn't work out but I am planning on trying again soon!