True. It would be a good idea to get a transmission heater on there as well.
Would I have used it? I'm embarrassed to say I brought an extension cord with me to plug in the car before I left, but it was -20C / -4F when I went to get the cord out of the car to plug it in, and it was so stiff and tangled (and I was so cold) that I said "screw it!" and went back inside.
