Car specific maybe? I was able to charge at -30C outside from a 120V outlet last winter.

If you only drive on weekends and holidays, level 1 charging is actually good enough. The cost of a level 2 charger is pretty insignificant to the price of a car, but every bit helps.

A1 has a direct drive extruder. It does function as kind of a hybrid thing with the AMS though. Use of the AMS with TPU isn’t recommended, but there are a couple of harder TPU filaments that supposedly work.