Road Rage

I have a problem. I tend to get a little... lets say excited when I'm driving. Actually let me preface this by saying, I am the only person in the world who knows how to drive. The ONLY person! When I do something on the road it is perfectly acceptable, if someone else does the same thing they are obviously idiots. I've always had this problem when I drive, even in Washington where there aren't nearly as many motorists as say... Southern California. My road rage has gotten out of control since I've been here. The things I yell at the other drivers don’t even make sense any more. The weird thing is, I'm a very calm person, I don't get angry very often and I hate yelling and for the most part I avoid confrontation. But for some reason when I am behind the wheel of my truck, I am ready to scream at whoever is going .5 mph under the speed limit and sit fuming until I get to my destination. Most people with road rage yell and then take some drastic move to get around the problem, but being a Washington driver I'm used to a more timid way of getting around so instead I just yell and then wait for a safe opportunity to legally get around the target of my fury. I think I need to either take it to one extreme or another, if I'm going to freak out its time to really freak out and veer all over the road like a true Southern Californian, or I could just relax when I'm driving and give up the whole ulcer inducing, stressed out yelling that I do. Hmm.