What to eat when...?

Hey guys,
I'm going to be driving across country for like 3 days and I was wondering what I could do to keep my cals up. I'm not going to have access to a kitchen or anything and I don't eat fast food. I was thinking maybe Denny's would be ok but I'm going to need more cals than that a day. I guess I may pick up some high cal/ high protein bars. Any other suggestions you guys can think of? I'm on a bulking diet of around 5500-6000 cals a day, I'd like to keep it as close to that during these few days.
Thx

Peanut butter sandwiches. Cheap and easy.

mmm peanut butter always carry that and bread in my car

Peanuts, milk, protein bars, peanut butter/whole grain bread, fruit

Fast Food: chicken strips

oh i forgot to mention - cans of tuna

Prepare a bunch of meals ahead of time and invest in a car cooler that plugs into the lighter socket. I've seen them pretty cheap at like $50 before.