This was really well polished, good work!
Two notes:
The tank controls never really let me feel in-control of what my car was doing. I lost track of which way my little square was facing pretty frequently.
Because of this, I found myself sitting in a corner and firing lasers more than once, while I got myself turned around properly, and because this strategy actually has some advantages over driving around, it made the game feel a little less like a driving game and more like a stationary turret game.
But seriously, good work- I had a lot of fun!