One of my pet peeves with drivers is following too closely. That is easy to remedy and would eliminate one of the most dangerous driving habits on the roads. When I was in school, several times the local officials would do a demonstration on a side street to show how long it took to stop a car. They would take three different students and tell them to floor the car, then slam on the brakes when a paint gun fired as the car reached a prescribed speed; then they would measure how long it took to stop. If I remember correctly, the speeds used were 25, 35 and 45 miles per hour. It was pretty impressive, because it took a lot longer than one might think. Plus, those students were entirely focused on stopping, so the real-life reaction times would be considerably longer. DON'T TAILGATE!