I ran across an article from Smithsonian Magazine about moving
sidewalks today:
http://blogs.smithsonianmag.com/paleofuture/2012/01/moving-sidewalks-before-the-jetsons/
Although it doesn't mention "the Roads Must Roll", it does have
pictures of the moving sidewalk from the 1893 Columbian Exposition in
Chicago (which I've mentioned here previously) as well as pictures and
film of a two-level, two-speed moving sidewalk at the Paris Exposition
of 1900.
There's also mention of a 1925 article by Hugo Gernsback predicting
multi-speed moving sidewalks combined with high-speed elevated trains
in 1975.
-Chris Zakes
Texas
--
"Hold on, hold on, there must be a law against killing lawyers."
"Are you *sure*?"
"There's still some around, aren't there?"
-Terry Pratchett, "The Truth"