Transit cars speeding overhead at 100 mph? That was Joseph Strauss’ proposed solution to the expected traffic problems in San Francisco caused by the increased numbers of automobiles crossing into the city from the Golden Gate and Bay Bridges.
We ended up with Bay Area Rapid Transit (BART) train cars above, and below, ground instead.
(Click on image to enlarge)
Source: Sausalito News Newspaper, September 28, 1934 via California Digital Newspaper Collection, Center for Bibliographic Studies and Research, University of California, Riverside