Here is my idea how the freestyle will work: You have no time limit. The run ends when your car is damaged and can't move. There is a 90-degrees ramp on each side to turn your car around. In the middle there are some different loops and jumps. Everytime you drive from one side to the other you have to take one jump or loop. When you pass it with success you'll get points (depending on the difficulty). If you pass the field from left to right without taking a loop or jump you'll lose points. If you turn your car around with some airtime, you'll get extra points. Let me know what you think! Maybe you have some better ideas!