I have a backpack with emergency survival gear for my car. The scenario being it might take a couple of days of walking to get someplace that money and/or a credit card will increase my chances of survival.
I like to keep emergency rations in the backpack. Currently I use PowerBar Performance Energy The packaging holds up very well, they have a taffy consistancy so don't break into crumbs. There is no scenario where you could not eat one, even in driving windy rain, in total darkness you could open one of these without tools and consume all the nutrition.
Additional, while they don't taste bad, they are not a treat, so kids and spouses are unlikely to deplete supplies between rest stops on the road.
I am looking to add variety to the survival rations and am looking for comparable rations.