Did you know:
The Walt Disney World Monorail..
Operates over a span of 14.7 miles, connecting EPCOT, the Magic Kingdom , and the TTC as well as the Magic Kingdom resorts.
They opened in 1971 with the Mark IV monorail system and updated in the MarkVI in 1989. In 2007, Disneyland monorail switched from the MarkV to Mark VII without ever seeing the Mark VI.