I think that anyone who has been driving for more than a week has their own stories about "jerk" drivers. I know I do, and plenty of them. I know that the older I get, the more I really appreciate considerate drivers- the type that make room for you when they see your turn signal, or back off and let you in when seeing you merge, or even slow down and hug the shoulder when you go to pass them.
Like most anyone, I have sure seen red when someone does something aggressive or dangerous, but something a friend told me has stuck in my mind and really helped in those situations.
"The world is full of jerks, always has been and always will be. If you could magically zap and disintegrate every one that deserved it when they offended you, The world would still be full of them. Ignore them and live with it."
Also- to you jerk drivers out there (you know who you are- some of you are friends or family): CUT IT OUT!
