If you are fortunate enough to have a garage, use it, even if it does take a few minutes longer at night and again in the morning. The time will be recouped on the first morning that you do not have to waste time in an icy driveway starting a car whose battery has run down.
Clear out the garage around the time you put the garden to sleep for the winter, and make sure the door lock and counterbalance mechanism open freely. Being in the garage will keep the car at a warmer temperature overnight, as well as protecting it from the seeping moisture and condensation that cause electrics to falter. Remember, insurance companies may not pay out if you say you park your car in the garage when actually, on a number of occasions, you don’t.