That is a very astute observation! Thank you. I have wondered why more and more convenience stores are getting into not just quick, pick-up snacks, but full blown fast-food style sit down environment.
Recently when I drove around in the USA, I saw Sheetz, Wawa, Royal Farms, Rutter's, and High's. These are substantially larger with lots of amenities compared to the standard gas stations. Nothing compared to Buc-ee's, but still getting up there.
Not sure about the others, but at least for Wawa and Royal Farms: many locations have offered fast-food style options for a very long time, like 25+ years, maybe more.
Wawa has always been known for quality. I remember years back when there was a romaine lettuce shortage, they put up deeply apologetic signs about how they're temporarily substituting iceberg lettuce in their sandwiches.
Meanwhile Royal Farms is known for their fried chicken. Although, the one near my college in Baltimore was more known for being a frequent target of robberies :/
On a road trip, I recently ate at a Sheetz in central PA that had Electrify America chargers. Good food selection, similar to Wawa. Not the best overall experience though -- an unhinged lunatic flipped out at me for leaving a single unused napkin on my table (which lacked a napkin dispenser, and the place had no recycling can). I avoided that charging location for my return trip...
Sheetz, Wawa and Royal Farms all already have Tesla chargers. Wawa has a location in Virginia with no gas pumps but Tesla chargers. So yes they are already planning for this future.
Recently when I drove around in the USA, I saw Sheetz, Wawa, Royal Farms, Rutter's, and High's. These are substantially larger with lots of amenities compared to the standard gas stations. Nothing compared to Buc-ee's, but still getting up there.