Registered: 12/25/05
Posts: 647
Loc: SF Bay Area, CA
Take a look at survival rations . Althoug they are rated to for 5 year expiration dates, keeping them in the car will surely decrease its shelf life. I have not expriemnted with them, but my guess keeping them in the car will decrease the shelf life by about 2-3 years, still better then most "normal" foods, IMO.
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