In the south, there often will be a BBQ place near an exit if we're staying at a motel heading somewhere. I'll try those, I'd say most of the time they are pretty OK and sometimes quite good. At a point the objective is merely to have food that won't make you sick. and we're lucky in the US and in Europe that getting sick is pretty rare.
I'm reminded me of the cafeteria style place we had lunch at in Korea, the ladies were really slinging stuff out there for a pretty large group. And it was quite good I thought, but the kimchi was as advertised.