Not being funny but road rage is just an indication of modern society.
I mean how many people would call a woman a "fúckin idiot" or stupid twat if they walked in front of them and how many man stop and let woman walk thru a door first, my point is that once people get in their cars, its all about who has the fastest and who's the hardest. I've grown all out of that (even though i do get wound up - centre lane owners, you know who you are)
The best reaction I ever had (when i first passed my test) was when a bloke cut me up on a round about and i was just about to give it out the window and call him all the usual things, when he stuck his finger on his nose and went "ner ner ner ner ner". totally diffused the situation and made me piss myself laughing.