I think I saw the original version of this in 1958. The interesting thing (50 years hence) is to see how many things have become reality, others have been tried and failed, others will never work, and others yet have yet to blossom. One that should have happened already is “truck trains.” I guess it is politics and the screwed up financial system that is standing in the way. We are finally getting some of the technologies that will eventually give us automatic pilot possibilities. That is probably another 50 years away. 10 to 20 years for the technology and 40 years for the cultural / societal adjustment.