flowerbug
Sustainability Master
Can of sardines- I've been happy more than once that I had one in the car. I dunno if that's bear proof, but we don't have that many bears here... mostly Cats and Coyotes.
DH made up a small kit of tools and extra parts for simple break-downs: broken belts, hoses, that sort of thing. We belong to CERT, so we have emergency kits in all cars for that too.
One thing we just got for each vehicle is a GOOD QUALITY tourniquet. If someone has arterial bleeding, you don't have the luxury of waiting for an ambulance. Make sure it's one you can operate one-handed too; might save your life.
i think canned items are sealed and cleaned well enough to not be attractive to bear, but i still wouldn't keep them in a vehicle because i'd more likely want to eat them.