Right, well there goes another of nissan's finest. Are you alright though, i mean have you been to a doctor at all. you said you blacked out, i'm no doctor but that can be dangerous if you havent been checked out. That really blows what you "friend" did to your car, i cant believe he didnt tell you that he didnt have a licence, then have the nerve to ask to drive your car, that just fu(ked up.
I wish you the best in the future, and hope that somehow this mess with an uninsured car and a driver with no licence driving your car gets sorted out, you dont deserve to walk away from this with nothing, i think it would be a real shame if you did.
Good Luck