789
China Just Turned Off U.S. Supplies Of Minerals Critical For Defense & Cleantech
(cleantechnica.com)
This is a most excellent place for technology news and articles.
Uhh we've had helicopters since the 30s.
https://en.wikipedia.org/wiki/Helicopter
True, but they weren't really used much as flying cars till later. I might be wrong on exactly when they moved from military to "rich transport to the race track", however.