I grabbed this from Target this weekend:
Brand: 1893 Citrus Cola (by Pepsi).
Purchase Place: Target, Minneapolis, MN.
Sweetener: Fair trade certified sugar.
Review: I was ready for an "orange" punch, but after a sip, it was clearly a "grapefruit" flavor. And then, sure enough, I noticed that it said it was infused with "grapefruit essence." If you like grapefruit, then give this a try - the grapefruit flavor was pretty spot on. It was OK, but their plain 1893 Cola was much better.
Score: 6 out of 10.