I recall a story told last summer around a campfire on a large tract of land owned by a friend of my father's.

Apparently, a friend of my dad's friend is a ren faire frequenter, and has in his possession many large and deadly weapons, among them a large battle axe.

He was, it seems, returning home from a faire, and got into some sort of competition with another driver. Well, tempers flared, and eventually they pulled over to settle their differences.

The other driver came out and marched towards our friend's vehicle. He deftly grabbed his large battle axe and, dressed as a viking (or something equally fearsome in appearance), stormed towards his assailant, who, detecting who would be the victor in this conflict, quickly turned tail and bravely ran away.

So, the moral of the story is: to deflect would-be road ragers, always have a battle axe in your vehicle.