You wouldn't really need a heated garage (at home, anyway) if you had a 220 volt charger. That should be able to overcome any charging challenges in extreme cold, anyway. Relatively easy to get that into your garage.
Also - if you arrive at your friend's place in the winter and park overnight, you won't lose a ton overnight if the car's just parked there.
Also - if you arrive at your friend's place in the winter and park overnight, you won't lose a ton overnight if the car's just parked there.