I've been coming here for a quite some time now when I want a good, basic sandwich. You wouldn't expect anything great from a gas station, but they do a really great job. With options like Subway and Jimmy Johns so close by and I consistently come to Roy's, that says something.
You just write down what you want on the paper they have you fill out, give to the attendant, and they make it for you there. There is also a few tables located in here so you can eat inside. It's a great little spot!