You are passenger in a full size pick up truck with your spouse on a major highway when an idiot in another vehicle brake checks you for no reason. Said idiot then proceeds to pull alongside and make contact with your vehicle and tries to force it, and you off the road into either the median that is divided with I-beams and steel cable or possibly oncoming traffic. Wife is keeping the vehicle under control and the aggressors car is much smaller and lighter than yours so he is making little headway, You are armed and have a clear shot although there is considerable traffic. You can leasily make a shot without your bullet endangering other drivers but that leaves a pilotless vehicle to contend with.
What do you do? Thoughts. Different responses depending on what state you are in? I.E. gun friendly to absolutely not gun friendly.