If you have a webasto or eberspärsher you could use the exhaust piping to warm up the rear differential and wheel bearings. or the transmission. Today it was -15 celsius and one ElCat heats all the time its batteries with ebershpärsher. After half an hour there were 12" water pot hole under the car. Exaust heat temperature was something like +40-50 celsius degrees
. Now it was pointing to ground.
Elcat Electric Vehicles