The post 2022 Models have heat pumps which help quite a bit but heat pump efficiency drops off dramatically after -15 or -20 degrees.
The Teslas also have scheduled departure so if I'm at a restaurant or something, I'll estimate when I'll be leaving and the car will slowly warm up the cabin, defrost, condition the battery etc. to be ready to go when I'm ready to go. That consumes energy as well. Its not necessary but it's for comfort.
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