Back To The Future 2 Biff of “2015” finds the Delorean and goes back in time to bring 1955 Biff the sports almanac. He drives young Biff back to his grandmothers house to start explaining the almanac and drives over the hedge in the process. Biff’s Grandmothers house (right): 1809 Bushnell Ave. South Pasadena, CA.