Look like you didnt get some idea of the game, when you get crushed you can aim with your character (just rotate the mouse) and push nitro button to dash\force push his body, and if you reach with body of your character other car - you possess that car and can drive it. And along the game you can repossess as many cars as you can.
I tried the game again, and I am sorry to say that even with your great instructions, that I am just really bad at the the game. But anyway the idea is fun, and I believe it's a great game for many people. And in the Unreal Mega Jam you have succeed in making one of the more interesting and fun games.