It never gets to - 50c in BC.. and I'm not too sure how often it get down that far in the Great Divide area unless wind chill is accounted for and even so that would only be a few months a year. I'm pretty sure that something could be gerry rigged on site to fill the cars as it's being pumped from the ground and still warm from the extraction process. It would then thaw out on the way to B.C.Either way it was an interesting article..