Not necessarily...I don't know about where you are, but in Wyoming, vehicles have tank heaters installed and they plug them in at night. You forget to plug your car in at night, it's not likely to start in the morning during the winter. But, I know that they don't have those down south...I know this because there was a grad student in Wyoming who came from Arizona...he came to the University of Wyoming in the summer to study astronomy, where there were wide open spaces and little light pollution and we had a really awesome telescope for it. He ran all over the place with his camera, and I remember him running across the parking lot, taking pictures of the tank heater cords on all the cars because he said his friends back home didn't believe that people in Wyoming plug their cars in at night...they thought he was pulling their legs. So he took pictures to prove it. It never occurred to me that there were cars that DIDN'T have a plug, but apparently that's not a "thing" in the South.
How many do you need???
