Seventeen. That's an exciting year of age for a boy or a girl. Some of you girls listening tonight are just seventeen, finishing high school or starting your first real job, or having your first real, honest-to-goodness date, going hiking or Weiner roasting with the gang, or sitting in the middle of the floor with your stack of records. Tonight's story is about two girls, who are both aged seventeen. It's just after sundown, and on a highway just above Pittsburgh, two girls with one suitcase between them stand at the side of the road. They're attempting to hitchhike...