Certainly sorry to hear this. My Volt has had fewer problems than the BMW, MB, Lexus, and Acura I had. So there is that. On the other hand I had several issues with my ELR when I first got it. All but one thing was software based, but I could have gone off like you are. Since at that point I had had the Volt for four years without a single issue I didn't freak. Best advice I can give is to stop beating yourself up, chill out, take the car back to the dealer, and have them fix it for you. Likely is a 12v battery problem and not a big deal. Unfortunately stuff like this happens.