100W in a car at -30℃ i doubt can do something more than gives you extra minutes before freezing... An Webasto-alike with a 20l diesel tank might last a bit, if

100W in a car at -30℃ i doubt can do something more than gives you extra minutes before freezing... An Webasto-alike with a 20l diesel tank might last a bit, if anything is inside, 12V included to keep the webasto on. But nothing more. At -1 well, that's another story. About torque: no doubt that an electric motor can dose, actually the car pedal sensitivity do not allow the same, specially on slippery or steep roads, at least that's my experience with my modest MG ZS and few others EVs I've tried. Of course, someone might add a "parking mode" to help, but who have done that so far?