I sold my first tandem, which really wasn't a very good bike, to a girl who actually did that. She was about 15 years old and totally blind from birth. Her family lived at the end of a cul-de-sac and she would ride a bicycle around in circles for hours. The tandem made it possible for dad to take her on longer rides.
I find that I ride much farther and faster when I estimate than when I rely on a bike computer.