No sane man would allow his car to be destroyed. Perhaps, that is true, but when you are being paid some big bucks that will be sensible. A car derby is illegal, but some car owners participate in them since they are being paid huge amount of money.
In this game, you will be participating in such derby. Of course, you know that this means that you need to destroy the other cars in the arena. Try to bump them till they crash. While there are power ups that you can use, there are also weak ups that you should avoid. Repair and upgrade your after every level.