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A comment on Pictures from the 1939 New York World's Fair (2017). Parent comment

Re:Pictures from the 1939 New York World's Fair (2017) by userbinator on Sunday September 29, 2019 @02:52PM (#21108911)
Moving sidewalks.

That stands out as one of the things that did reach a limited amount of use:

https://en.wikipedia.org/wiki/Moving_walkway

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Re:Pictures from the 1939 New York World's Fair (2017) by asdff on Sunday September 29, 2019 @04:08PM (#21109350)
Because in practice, they aren't any faster because people just stand in them.
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