Of all of the Crown International hippie exploitation pictures from the seventies, Pick-Up is by far the very best. It is available on a two-disc set along with another film, entitled The Teacher. Pick-Up tells the story of two young women who are "picked up" by a man driving a mobile home. After the vehicle breaks down, the three individuals share spiritual and erotic encounters in the forest.
You've not seen anything like it.
Available from Mill Creek.