For me it doesn't work. The window pops up but just pitch black and then it crashes (like if there would be infinite loop going on somewhere).
Okey I got it: it is loading car colors for so long that it seems that it has crashed.
Edit: Well outside of the fact that it is loading for so long, the game itself is very good! I like the way it matches the theme :D BTW if these are really your assets, they look really good