Since I have had my CHL I have calmed down considerably when driving, but I agree that if someone passes me on the shoulder.... that is very upsetting. However, I have learned to just ignore them, don't pull up next to them, keep my eyes straight ahead, turn off my ears and leave the area.
I have also learned that it takes a better man to do that, than it does to let him drag you into a confrontation.
Especially, I agree with Rex, if all you have is a wimpy 9mm...RUN.
this calls for a caliber starting with a "4"!!
(Just Kidding)
-geo