Here in Northeast PA, where time has been known to stand still on occasion, we have some wonderful "Roadfood" restaurants. If I were to drum up a hometown top ten of ALL of my favorite restaurants, there would be two or three Old Forge Style Pizza places, a diner, an Italian sandwich shop, and a mom and pop Italian hole in the wall.
Now, maybe in Austin, family-run Italian restaurants would be "ethnic", but here in NEPA they are more common than even "American eateries", so YES they are all Roadfood IMHO.
Also in my top ten would be...(and I'll name names here, because I probably wouldn't otherwise post these great places on this site)...
Katana, Wilkes-Barre (terrific sushi)
Par Four Cafe, Wilkes-Barre (Asian-fused cooking in an unmarked pub)
Amber Indian Restaurant, Moosic (as good as any Indian in NYC, IMHO)
GoodFellos, Exeter (wonderful, upscale, intimate Italian).
So, while the places on the second section of my list can be "just as good" and even on some occasions, "better" than the Roadfood at the top, they are not "unique" to Northeast PA (though GoodFellos may be).
They are all "newer" and "more expensive" too...all atypical Roadfood. I'd be more likely to post them on chowhound.com, but I hardly ever spend much time on Chowhound because it can be snooty...and I'm not snooty. To me, many upscale places---like the one we just took Dad to for his 75th birthday---get too funky, unnecessarily dressing up ordinary food...and the end result is still pretty ordinary. To me, these places are usually not worth the money---dollar for dollar they lose---nearly every time!
If it weren't for Michael and Jane to sound the trumpets, to give credit where credit is due, some of us still might believe those Mobil restaurant guides. Yes, a $3 pork chop sandwich meal can be BETTER than a $250 one-bite-per fork dinner at a "5 star restaurant"! And it could be worth the 75 mile detour too!