The Experimental Prototype Community of Tomorrow. A film made just a few months before his untimely death, showcases a really cool idea, that I think could be feasible today…
Here in Malaysia, there is such a thing. Called Cyberjaya, it is a full sized township that has nice long easy to drive roads and very few stop lights. There is a startup accelerator called 1337 Ventures that works with the Ministry of Finance, turning the entire place into an experiment for smart city startups. We could see driverless cars being tested there and such.
There is also another startup accelerator called MaGIC (Malaysia Global Innovation and Creativity Centre) that also have similar aims.
A new transportation hub is also being built. Track bases are already in place for the monorail system to link areas in Cyberjaya to the twin administrative city Putrajaya (however I am not too sure if they will ever be built).