The best sound effects hands down! :D
Steering when reversing reminds me of a RC toy car I had as a kid which could only go forward and back and had a piece of plastic that would cause it to steer when driving in reverse (I think it was not ever really remotely controlled, but that the "remote" was connected to it with a wire).
I had a lot of fun with this game and it is really well-polished. Great work! :)