It was so cold at 8pm, when I pulled out my door key bare handed my fingers nearly got frost bite just by putting the key in the door lock. Instant pins and needles feeling. It was negative 22 F at that time. I can't believe it's going to drop ten more degrees tonight.
Please carry extra clothes, blankets, down sleeping bags and food in your car, in case your car breaks down, gets stuck or won't start.
A candle in a can will keep your car warm inside in an emergency. Make sure you have matches and a lighter.