It’s a mystery.
Mind you, this is inside the store at 575 Market Street. The cash registers are just to the left.
And the woman camera right is noshing on a McDouble or something:
Click to expand
It’s another mystery…
[All right, Commenter One sort of has the answer, and it's one that I already sort of knew (although I didn't make a connection with the addresses) but it doesn't tell the whole story. Somebody out there on this Great Blue Marble thought it was a capital idea to do honor a gas station inside a Micky D's, but I don't who, don't know when...]