Wuppertal was home to a unique monorail system that hung upside down from its track and had been in operation for over fifty years. It was not unlike a vision he and artist Herb Ryman had imagined for the original Tomorrowland plans:
"Later in the trip, Walt and Lillian were driving north along a major roadway near Cologne, Germany when a monorail train suddenly crossed over their heads. This monorail was very different from the one in Wuppertal. This train rode on top of steel-reinforced concrete beam. Walt was stunned. He wanted to learn more so he drove right to the administrative building to see what he could find out."