This is not so easily done in a cold or hot climate where air-conditioning or heating are needed. It is the reason why most people outside of the SV bubble can't do it.
Yes, and a heated+refrigerated truck for most of the north. It would be unacceptable to have the engine running the whole time. I think it's doable in theory with a truck that has giant electric batteries, e.g. a Tesla Powerwall or two. Maybe a specialized RV cwould have it.