Walt Disney's City of the Future, E.P.C.O.T. (documentary)

defunctland.com
https://www.youtube.com/@Defunctland
(Season 3 Episode 11 2020)
Walt Disney made ambitious plans for a City of Tomorrow named E.P.C.O.T. (Experimental Prototype City Of Tomorrow) just before his death in 1966, but the plans were soon abandoned. What were Walt's ideas for his city of the future, what happened to the project, and would it have worked?