The fool drives like a maniac cutting people off and constantly tailgating the car in front of them.  People think that by driving up close to the bumper of the car in front of them they will somehow get where they are going sooner.  Precision driving means looking beyond the cars in front of you and picking the best overall lane to be in.  Driving in the city you can not go faster than the speed of the traffic lights.  If you are very aggressive and manage to make one light or two before it turns red you are not going to get anywhere faster than a minute sooner most of the time.  Take it easy and drive smart not like a neurotic.