Life on the road is really tough as there are lots of bad guys that wants to get ahead of you. Being a tough guy yourself, you are not going to give your way without a fight. However, the downside of this way is that, cops are going to after you.
The idea here is to crash other cars. You need to get ahead of them before you can do that or you will just damage your car. As you crash other vehicles, your car pick up speed. Crash more vehicles to gain momentum until you complete your task. Each task will be different.