You don't know shit about what locals prefer in rural areas.
In rural areas around here, the chances of finding a chain restaurant are next to non-existent.

But as an example, while travelling around lunch time near Sherman, TX, I used the "Top 10" method to find a Mexican restaurant and found Camino Viejo.
It was a small (12 tables maybe) Mexican restaurant downtown on the corner of a building. We walked in and there were three Hispanic men between the ages of 30-40, sitting at separate tables, and I grinned as I knew we had found the right place. There was one waitress, and one chef (he was actually wearing a deep olive green chef's uniform) in the kitchen (you could see the entire kitchen from the dining room). The place smelled right, looked right, and the menu had an unbelievable number of options. Chip were hand made, salsa was freshly prepared, the items we ordered tasted like we had ordered them from a fine restaurant in Playa del Carmen. Each meal was about $10 and they couldn't have done it any better.
After fixing our meal and cleaning up what he used in the kitchen, the chef walked out, grabbed a Coke out of the fridge, sat down at a table and started reading the newspaper. When he glanced our way one time, he just nodded and smiled, because he already knew it was all good.
It was not only good food, but a place and experience I will remember for a long time. If I ever go through Sherman again, I know where I'll be eating dinner. The question is whether or not I decide to go to Sherman, just to eat dinner there if nothing else.