I used to be the type of driver who would impatiently zoom around, until one day I noticed several deer beginning to cross the freeway. I slammed on my brakes, but the driver behind me honked and swerved around me and, at over 80mph, took two of the deer with him. He left the scene in an ambulance and his car went to the scrapyard on a flatbed. No one ever told me what happened to the man, but while we were waiting for the ambulance and while he was being loaded, I never saw him even wiggle a toe or blink an eye. He was breathing but completely unresponsive. I don't know if he survived or not.
It's moments like that one that can change your outlook on life in an instant. That was four years ago and I haven't intentionally broken the speed limit since then. Even if it means other impatient drivers are zooming around me. I have, however, been rear-ended twice since then.