"Suddenly, thrown off balance and about to fall, he [ Marty, on his makeshiftskateboard] reached out — and found himself holding onto the front end of Biff's's car. / "Now we've got the son of a bitch!" Biff shouted. "If he holds on, he's dead, and if he lets go, he's dead!" / Smiling sadistically, he began to push Marty down Hill Street, past Gaynor's Hideaway, where customers had come outside, some still holding their drinks, to view the action."