Or maybe get creative with your meals because, as someone who grew up with endless long road trips, what you just described are some of the most depressing meals you can get and after a couple days most people will be so sick of cold, sad, sandwiches that they’ll be desperate for ANYTHING else.
I make a lot of different sandwiches before I hit the road… I guess I interchange them with wraps/burritos, too. Not just cold cuts, but leftover curries and stews smashed between bread, eggs and sausage/bacon, salad wraps… mixing and matching with different sauces and spices helps a ton. If you have the time to toast the bread or tortilla, it makes a big difference. I pick a different cuisine to use as a base for every drive… Indian, Asian, American, Italian, Mexican… you can keep it fresh.
It’s mostly just about preparing a transportable meal. I guess I also carry soups, curries, chili, gumbo, and stews in a thermos. I usually try to stay in airbnbs or suite hotels that have a kitchen, but often just use a microwave. Sometimes i use microwaves at gas stations to heat up a meal, but that’s not always an option.
The only thing I make sure to do is have something to prevent me from giving McDonald’s or Taco Bell $20 for garbage.
