A couple things
You need to let players go to the next level or start the next level without the mouse. Constantly grabbing it to click next and start is annoying.
You also have a bug: if you are holding the up key (accelerate) before the level starts your car won't go forward unless you re-press it.
Yeah, pretty good!
I like the 3D effect. This kept me entertained for quite a bit. At first I thought you were supposed to run into the trees.....guess not.
Original idea, and it plays quite well. Animation could use some work, but isn't offensive.