Riding in Cars with Boys

On a trip out of San Francisco to a nude beach down the Pacific coast, li and Rose pick up two hitchhikers and invite them along on their journey. As things start getting heavy with their riders, they draw an audience. In the blink an eye, the two young women are servicing even more strangers.
Their next adventure finds them picking up a lone hitchhiker and, pulling off the freeway, find their guest is capable of building up their libidos to euphoric heights.