I'm with the majority here. The car is the boss. Luckily, it tends to be in the 40s-60s during the winter here, so it's not TOO hard to not run the heater -- and when I am finally an icicle, I just turn on the seat warmers until I'm toasty again (only to later turn them off). I have a long commute though, so maximizing EV miles is important to me.