Great work. Really enjoyed it a lot. Really liked the tire marks you left behind as well as you spun around corners. That was cool.
The one thing that I'd note is that I personally found "Hard" mode, ie. POV mode a LOT easier than the top-down mode. However, I really liked POV mode.
A thought I had was perhaps you can go between POV and top down mode simply by hitting a key to switch camera (in both modes), and perhaps the "Hard" mode has a timer for each level or something like that.