Sheetz could have its own app that could let you scan your My Sheetz card so you'd only need your phone to access it. It could also tell you of any new deals, and keep track of when your next free coffee/sub/etc would be. It could maybe be implemented into the MTO service in that you could have the menu within the App, and simply order from home and have the food/drink ready when you arrived (payment could also be processed beforehand).
Idea No. 5