One of my girlfriends (who I joke is friends with "everyone" on Facebook) came accross this and shared it on her page:
Caption: "Perhaps the best New Orleans Superbowl celebrity sighting. Robert Retz says, "This guy got on the streetcar and started singing Beatles songs to my friend Evelyn. Turns out he was Paul McCartney."
Clearly, Evelyn won the Superbowl."