Nice game! I like all the graphical touches that make this look really polished. I made a prototype of a drifting game recently so when I saw this game it caught my eye. One thing to think about: by the time you are this far along in making your game you are VERY good at it. So keep in mind that a new player is going to be really bad at it at first and if it is too difficult at the beginning they may just stop playing and never give it another try unless there is some other reason to bring them back to the game.
I'm really impressed you made this with Game Maker. The depth with the trees and the car shadow make this look really good and give a very 3D feel to a game this is 2D.