After Marty destroyed Grays Sports Almanac in 1955, using a matchbook he had taken from Biff Tannen's Pleasure Paradise Casino & Hotel in 1985A, the text on the matchbook's cover changed before his eyes from PLEASURE PARADISE to AUTO DETAILING. In a kind of poetic justice, Marty had burned the almanac using a matchbook advertising the business empire that this very book had made possible. It would appear that Biff still ran Biff's Auto Detailing in 2015, as he would wax (two coats, naturally) the hover-converted orange and black BMW 633CSi convertible owned by his grandson Griff.