that is interesting, probably you should open a complete new thread for that in extreme cold areas.
For example: who is using a heating pad? Is this one the best or what is everybody using?
http://www.padheaters.com/index.html
http://www.dieselproducts.com/proheat/padheater.html
http://www.wolverineheater.com/engin...ting-pad.shtml
http://www.jegs.com/p/Moroso/745633/10002/-1