John Elway took a cab in D.C. recently, the conversation led to football, and the driver kept talking about how Elway was the greatest quarterback of all time . . . but didn't even realize he was in the backseat. (Elway was in town for Trump's inauguration with his wife and some friends. They got the driver talking, and kind of egged him on . . . the driver even joked that MEN would sleep with Elway, because of how much money he has. Eventually they showed him Elway in the back seat. The cabbie's name is Sam Snow.)