The concern about cold and EVs is overblown. While sure in the arctic ….

• heat pump makes a huge difference in winter range
• my car really only loses noticeable charge while idle because I keep sentry mode on. I live in a busy area so the entire car keeps waking up to make sure no one is vandalizing it. If I turn that off, the loss is not really noticeable
• I believe Tesla replaced the old tech 12v lead acid battery for running accessories with a lithium ion battery meant to last the life of the car

I believe the other factor in the most publicized instance of cold weather affecting EVs was people. People waiting until they’re desperate, then finding lines, and waiting in their vehicle with heat on