Make sure your next EV comes with a heat pump, then heat should not be an issue. Although I don’t know how common EVs with heat pumps are in the US. Here in northern Europe, most EVs are offered with heat pumps nowadays, but in other European markets with milder climates, I think they are still much more rare too.

Interesting, I had not heard of Psono before, cool to see a European alternative that is fully open source. I’m currently self-hosting Vaultwarden but I might give this a try to see how it holds up.