I take both vehicles on multiple day business trips in the winter. In the hotel room I contemplate whether it is going to be 0 degrees or 15 degrees the next morning. Every degree above zero matters, as you all know.

Once, in Pittsburgh, it was going down to near zero and I strung a 100 foot extension cord out the second floor window and down to the vehicle. Naturally, the vehicle was quite pleased with this. And, apparently, it was so cold that the management did not even go behind the building that night.