I'm glad Tesla has thought of these high/low temperature storage/parked issues. I think this is getting awfully complicated. How does one trade off keeping the car fully charged (bad for storage and battery longevity) and plugged in to keep the battery properly heated/cooled versus keeping the battery moderately charged for long term durability? The BEV manufacturers are going to have to design the system to survive the battery's expected life expectancy with "normal" use. I don't see how "they" can void warranties for the BEV not being plugged in all the time, as that is not reasonable to ask of BEV owners. One way this might work is to require the always-plugged-in model of usage and to design excess capacity in the battery to never be used. Maybe when batteries get cheaper and more energy dense? Or the battery chemistry will change and this hot/cold thing will not be a problem.