Predicting the future of technology seems to be difficult... https://www.smithsonianmag.com/history/1923-envisions-the-two-wheeled-flying-car-of-1973-114027072

Predicting the future of technology seems to be difficult... https://www.smithsonianmag.com/history/1923-envisions-the-two-wheeled-flying-car-of-1973-114027072/ https://www.smithsonianmag.com/history/1923-envisions-the-tw...