So if they can't prove any negligence, I will be good?
Correct, it sounds like you did nothing wrong and the only reason your car hit the plaintiff's car was that you were hit from behind and forced into opposing traffic. In that situation you have no liability that I can see. It will be up to your attorney to get you out of the case either for a waiver of costs or some nominal settlement.
Exactly and in the state of North Carolina the person that hits first is the one at fault. Thank you Sir!