Screw parking it - it's just about the best car on the road in the snow! It's such a new car, you shouldn't have to worry about the coolant. A coat of wax is definitely a good idea. You can still wax @ 55 deg. Search in exterior and appearance for waxes. In Michigan take it to a car wash with underbody spray as often as possible to rinse off all the salt they use up there.