Precisely. Its not different. Heating electrical use is so minimal it'll last longer than I will without leaving to garage for food and water. its 37F here and im driving 40 mph with heat set to 72F and im only pulling 21 amps. Sitting still its 5 amps or less which adds days of battery life.

Cars are cars, people get weird about it but its not like anyone is going to sit there until they die of thirst in traffic.