As it gets colder, I'm thinking about the change to below freezing temperatures. I've never carried food or water in my car before. I had considered not filling my water container full, to allow for the expansion when the water freezes, and then hope that it I need it I would be able to thaw it somehow (keep it inside the warmed up car maybe). But I'm also wondering about canned food. Do I just let that freeze too, and thaw it and heat it up at the same time?

I am just beginning the car kit process and don't have any sort of stove or heat source yet. Are Sterno type cans affected by freezing temps? Or are there other methods that work well in those cold temps? What do others of you in cold winter climates do? <img src="/images/graemlins/confused.gif" alt="" />