I don't see why they can't get into the subsystem for the drive by wire stuff, but there are things that can be done that would be quite bad even with the syste

I don't see why they can't get into the subsystem for the drive by wire stuff, but there are things that can be done that would be quite bad even with the systems that are directly exposed. What about if I can remotely hack into your car, crank up the heater and leave that running overnight so that when you head out to your car in the morning it's sitting at 0 battery, that's certainly super annoying. Could I potentially exploit the battery management system and run your battery to 'actually 0' damaging or potentially destroying your very expensive battery?