Its a bit of a missquote there. Think of the two options you have on the table, as a complete bluesky option.
Option 1. One big vehicle that carries loads of people, you sit next to some random person you dont know.
Option 2. A much smaller, but personal vehicle (Which can still be operated automatically or by someone else), with your own desired interior.
Option 1 is the boring mass transit we have now. Option 2 is what Elon Musk wants, and he's 100% spot on with it. I mean, nobody likes sharing a monorail car with a sweaty bloke who stinks after a day at the parks, standing next to his wife nagging at him that he's in peoples way (genuinely happened).
If money was no object the monorail would be replaced with some sort of plussed version of the people mover, with personal ride cars which would essentially be the size of one side of a monorail carriage. When you get in you just pick a destination, sit back and watch TV, browse the web, etc with your family.
EDIT: This all being said, people seem to forget what Disney were once capable of. The entire MK IV was designed in-house. Go back not to long ago and most of their systems were in-house, its only in the last 20 or so years they've seemingly lost the ability to make anything other than an audio-animatronic. The company collectively needs to grow a pair and go back to taking risks on big new ideas instead of outsourcing it to the highest sponsor.