One does not need heat to sleep in a car (slept dozens of nights at ski resorts). This does not mean that you can heat up a van/rv with electricity.
(I have lived for a month in a van in Montana/Colorado/Wyoming. Camped in a Forester for months all over. Lived and worked in a van for 30 days in PNW in spring).
(I have lived for a month in a van in Montana/Colorado/Wyoming. Camped in a Forester for months all over. Lived and worked in a van for 30 days in PNW in spring).