It was a fairly accurate prediction, in 1920, of the difference between the bulky locomotive of the day vs. the predicted streamlined version.
The article claimed that more locomotives had been built in the last 15 years than in all of history–perhaps true.
It was also claimed that, by streamlining the locomotive and cutting down on wind resistance, it could achieve speeds of up to 150 mph.
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Source: Popular Science Monthly February 1920
