Peter, if you don't mind me shifting the discussion back to monorails (but just briefly, though) I'd like to share a monorail-related tidbit that I just found out about.
Surprisingly, back in 2003, there was a proposal for Massachusetts to build a monorail to run down the median on Interstate 93, to routes 24 and 140, (from Boston, down to the southeastern part of the state) Another monorail proposal, around that same time, included a monorail to run down the median of the Massachusetts Turnpike, from Boston to Springfield, (western part of the state).
After a $10,000 study (for the MA Turnpike proposal), it was determined that there would be too many engineering difficulties, with obstacles such as existing bridges and overpasses. Also, they couldn't build stations for passengers to board in the middle of a highway; so, it would involve costly land-taking for spurs into places where stations would be convenient. An average/high monorail speed of 35 mph (again, the study was from 2003) would not be fast enough. And, monorails don't run well in snow and ice. In conclusion, maybe monorails should only be constructed in warmer climates, and in locations that haven't been built up as much as older parts of the country. Therefore, WDW is the ideal location for a monorail system!