Where does the idea that the futuristic world consisting of men and women in neat, plain white clothing and flying cars originated from?

by whitepoloshirt

Additional question, was there ever an author in Shakespearean times (or earlier) that wrote about what life might be like in the future? If so what kind of world did they envision?

sunagainstgold

I have a couple of older answers that might interest you:

I can't promise flying cars, but they do cover your other questions. :)