No lawsuit - the police couldn't find him so it's a 'hit and run'. I figure the dude got off at the next exit and got out of there. I was just glad for once I was in my truck instead of my motorcycle. If I'd been on one of my ST1100s, this would probably be turned into a memorial thread. ;-)
Do you have uninsured motorists? Was there contact between your vehicle and his? You need to see a lawyer.