A Hitchhiker
A hitchhiker is someone who stands on the road, thumb up, hoping someone will pick them up and take them somewhere, even if it's just to the edge of the world.
I hitchhiked with a guy who said he was a time traveler. He was late for his own time.
A hitchhiker once got a ride from a robot. It was very polite.
My sister hitchhiked with a man who had a pet raccoon. The raccoon stole her lunch.