In the '70s people were always hitch-hiking. I know a couple of people who hitched across the country in the early '70s. When I was a teenager in the '80s, there were alot of PSAs on TV and the radio, as well as a couple of made-for-tv movies, about the dangers of hitching, and from then on not too many people did it. As I look at the above pic, judging from the tight-fitting shirt she's wearing, I'm sure it didn't take the above chick too long to snag a ride..