Depending on where you are, there are still lots of restaurants that actually cook food, not just thaw and heat.

I've road tripped across the north east, South East, Midwest, PNW. I don't even think it depends. Not finding a place that actually cooks food is the exception, not the rule.

> I've road tripped across the north east, South East, Midwest, PNW

There is a class element to the problem. Restaurants tailored to folks on the road tend to focus on their costs. Restaurants offering fine dining obsessively make everything in house. In between, you need local knowledge to navigate the landscape—you’ll struggle to get that on a road trip (versus staying in one town for a few weeks).