The city is filled with criminals and you are one of the vigilantes that want to take them out of the city. Though, you might be a hero for some, the law doesn't allow vigilante, so you need to do your job in secret. The best way to do that is to use a car to crash the car of those criminals.
Drive your car as fast as you can and stay out of trouble. You have several targets and in time, you will catch up to them. When you do catch up, you need to crash that car and get on to your next target.