Looking pretty good! A couple tips though. 1. Make sure to hide the speedometer. Just hit SHIFT + U to do that. 2. Make sure to use slow motion so your game doesn't lag. Just put the game into 2-8 times slow motion and speed it up in editing. This will decrease lag. 3. For more tips, I made an in depth tutorial on this here. I hope that link I gave you can help you out! You have a lot of potential!
Oh Thanks in the ones with out the speedometer i just deleted it but i got annoyed in putting it back so thanks for that.