Everybody got their own personality and you can't do something about that. You can just avoid that person or be friends with him if you want, but you can't change him since he has grown into that. Likewise, in the racing world, car drivers also have different personality. Some are bad and some are good.
In this game, you be the bad guy as you are going to cause some trouble for the other racers. The idea here is to cause some accidents. However, the catch is not to make a head on collision since that will damage your car.