Nobody mentioned vienna sausage and Dinty Moores beef stew. Bring a can opener for the can of whatever that doesn't have a pop top. A sub sandwich with mustard dressing will be safe to eat for several hours, even in the summer. Same for pizza.

It's easy to feed yourself all the way across the country with no cooking at all. OTOH, how are you going to manage that hot cup of pre-pedal coffee without a burner?