well, if it's 12 degrees out, snowing on it and then melting will eventually get rid of it. Otherwise you could get a gallon jug, fill it up with whatever car wash you use, pour a little on at a time so when you pour it again it unfreezes and then fill up the same jug and rinse it. Of course, you could just got for a ride or let the car warm up and the hood likely isn't going to freeze from the engine and turbo heat. All sorts of ways you could do it, someone else may have a better idea. I'm in Md and it was 65 degrees today... pretty nice jump from everyday in the 30's I think.