The first time I saw this was at a drive-in theater around 1973, and I assumed I'd never see this scene again. The film has several names, but the one most attached is SAVAGE ABDUCTION. Pretty hippies Amy Thomson and Talis Galik get grabbed by a motorcycle gang and end up in the hands ofd a twisted businessman. For me, they had me at the go-go boots and stuff gags. By the way, Amy's short acting resume also has her bound and gagged in an episode of IT TAKES A THIEF.