There was the ever-present worry that aircraft would make war even more horrific. Some called for the international control of aviation to prevent its misuse. A few even advocated the complete destruction of all aircraft on the grounds that even civilian machines could be adapted for war.
…At the opposite end of the spectrum were the enthusiasts who expected that soon everyone would be able to fly their own personal aircraft…As early as 1928, Popular Mechanics predicted a car that could be turned into a helicopter, but most commentators thought the autogyro was a better bet — although it did need a short horizontal run before take-off…As late as 1971, Isaac Asimov was still expecting that VTOL [vertical take-off and landing system] machines would eventually take the place of automobiles.
That is from Peter J. Bowler, A History of the Future: Prophets of Progress from H.G.Wells to Isaac Asimov.
One thing I learned from this book is that “money crank” Frederick Soddy was an early prophet of nuclear power, before many others understood the potential. I am reminded of how “socialist crank” [oceans of lemonade with ships pulled by dolphins] Charles Fourier once prophesied that all of Europe would be tied together by railways.