Years before the horror of September 11th, anyone with a plane could fly over Walt Disney World. I know a pilot and we used to to do it often. The rules are obviously different now.
There are dozens of discussions on the web about what Disney does with their obsolete or mothballed monorail cars. This photo (cropped version of a much larger area), shows a few dozen cars awaiting demolition and burial. This particular landfill area was near the Polynesian Resort and is no longer in use (based on google maps).
Photo: Mark E. Lepow/Lepow Photo