In the back of my truck I carry some canned goods and a few cans of Sterno to heat them with. As it is alcohol-based it should be reasonably safe. I rotate the food and water once in the fall.

Can/do canned goods freeze where you live? If so, I would be very interested in the range of temperatures you experience. If severe, prolonged sub-zero cold could similarly effect my supplies then I need to re-think my food stash.

Regards, Vince