I'm willing to bet that most people here aren't familiar with Sheetz considering it is primarily a Pennsylvania thing. Sheetz is famous in the area for having really decent food, orderable through little kiosks at every store.

They pretty well own their niche at least in the area I'm familiar with. They're a good example of a business entering a saturated market (gas stations) but doing it better than everyone else to the point that most people that I know will go out of their way to go to a Sheetz rather than any other gas station.

Typically, they have their gas just a little below the average in the area, surcharge free ATMs, the Made-To-Order kiosks (sometimes located at the gas pumps), clean bathrooms, and a bit of a more friendly atmosphere than other gas stations.

They're actually a rather good example for startups.