Glad you didn't get hurt. After the adrenaline rush settles down and you gather your wits, don't waste time sending him a letter or even worse paying him a visit. There is absolutely nothing to be gained from it and much that can be lost. That can only escalate and possibly turn out bad for you. If you feel as though you just can't get over it and chalk it up to lessons learned from stupid cage drivers, then file a report with your local law enforcement department or perhaps the state boys. There is perhaps a lesson to be learned from this experience. If someone pulls over to either side of the road, be prepared for exactly that type of thing happening. I have learned to expect the unexpected and have my mental radar in full swing when I'm out riding. We have a fairly large population of eastern european immigrants in this area and they still drive like they did back home. Total disregard for traffic laws and even less for motorcyclists. Makes for some exciting days.