You shouldn't try to run over people.
James is driving when Keith who was riding a bike cuts him off.
James wants to react angrily to Keith's cut off.
James speeds up his car to catch up to Keith and then flips him the finger before driving off.
James speeds up his car and slams into the back of Keith's' bike knocking him down and running him over.
James feels satisfaction from his gesture and is satisfied that he got his anger out of his system.
Keith is hunted down by police and eventually caught and charged with attempted murder.