If it's sitting there for weeks why not just leave it plugged into an extension cord? In a collection a Tesla can sit plugged in for longer than a combustion engine can sit with a full tank of gas so it's really a question of slightly different needs for long term storage.
That's certainly true, there is not reason the cars can't be properly stored. I'm just saying it's easy to forget about it. A lot of people don't touch the sports cars during the winter and if you forget to plug it in, you won't notice for months (and at that point it is too late). A daily driver will never be forgotten about for months on end.
