http://www.backwoodshome.com/articles2/yago104.html
I carry a few items like this in my car/truck, but this is such a good idea, that I will copy it, making subs for personal preference, of course.
Excerpt:
By Jeffrey Yago, P.E., CEM
It seems like every winter there are news stories of people getting stranded for weeks in bad weather while driving through the many remote areas of our country. In fact, this past winter, our nation held its breath waiting for news of James Kim and his family who got lost traveling the snowy roads of Josephine County in Oregon, not far from where this magazine is published. While his wife and daughters, who stayed with their vehicle, were eventually found alive, he succumbed to the cold as he hiked through snow looking for help for his family. And there are also many cases of people trapped for days in their vehicles after skidding over a bridge embankment, even though they were only a few hundred feet from a busy highway.
I have written many articles about how to prepare your home for a power outage or national emergency, but today I want to address how to be prepared for an emergency when traveling in your car or truck.
A 10-day supply of dehydrated food and drink mixes, medical supplies, and cooking equipment fits easily in a small plastic cooler.
Keeping warm and safe
Warmth, of course, is a major concern in cold climate and snow emergencies. Since you’ll be with your car, you’ll have that as protection against the elements. but extra clothing (preferably wool), some blankets, and a sleeping bag will keep you warm if you are stranded for several days. Store these items in a plastic trash bag in your trunk or behind the seat of your pickup. I recommend wool clothing because it sheds moisture, just in case you have to leave your car during wet or snowy weather. It’s no fun being stranded and cold, and hypothermia is a real danger in cold weather.
QUAN. ITEM SERVINGS
Food Items Year-round, I carry 4 large cans of chicken & noodles and beef stew w/pop top cans
1 Knorr chicken and pasta dinner 2
1 Knorr beef and rice dinner 2
1 Knorr chicken and rice dinner 2
2 Maruchan ramen noodle soup 2
1 Idahoan home-style instant potatoes 4
1 Idahoan four cheese instant potatoes 4
1 McCormick onion gravy mix 4
1 McCormick mushroom gravy mix 4
2 Armour treat in metal can 2
2 Armour Vienna sausage cans 2
1 Star Kist tuna in foil pack 1
2 Sardines in soybean oil 2
10 Single serving coffee pouches 1
6 Nestle instant cocoa pouches 1
10 Herb-ox beef bouillon pouches 1
4 Country Time lemonade pouch 2
4 Bigelow herb tea pouch 1
2 Peanut bar candy 1
Free Salt, pepper, creamer, sugar pouches --
Other Items
1 Small sauce pan -- \
1 Enameled metal cup -- \
3 Canned heat -- /--------- I use a 12V food warmer
-- Matches and/or lighter -- /
-- Water purification tablets -- check
1 set Eating utensils -- check
1 Pocket or kitchen knife -- check
1 LED-type flashlight -- check
3 Extra batteries --
-- First-aid supplies --
-- Aspirin, Tylenol, Unisom, Benadryl, and Advil caplets -- check
3 Plastic trash bags & ties --
Other items to consider stashing in your trunk
QUAN. ITEM
** Toilet tissue** check
2 Water -gallon jugs
1 50-foot roll of 1/8 inch nylon rope
1 10x10 ft. plastic sheet
2 Duct tape check
1 Sleeping bag check check
1 set Extra clothing
50 Paper/plastic plates
2 rolls Paper towels
1 each Toothbrush &toothpaste
1 each Shampoo, hand lotion, bar soap, hand sanitizer
2 Disposable razor
** Since a standard toilet paper roll is huge to pack, I always tell people to save the roll from their bathroom when it gets to a much smaller size, compress flat, and place in a zip lock bag.
More @ link
Actually, in my car, I keep a 12V food warmer that works very well, rather than a small stove and pan.
It can be found here: http://www.canadiantire.ca/browse/produ ... 7925611279

I always advise adding a rain suit and 5 buckle rubber boots. not only for the obvious of keeping dry but in cold weather will help retain body heat.