I can understand your frustration, but like Tdot said, put it behind you. There are many, more important issues to get angry about. Seriously, say you do get this driver's home address from his license, what do plan to do? Can you imagine being on the news and the reporters telling the story about a road rage incident where the driver tracked down the other driver? I also tend to get upset over little things and my mind begins to wander to me how I should get vengeance. But then I try to look at it from a 3rd party's perspective and realize how silly/crazy I would look and how I doubt I would get any sympathy over the way that I think I should react.
Think like Ilya Bryzgalov