According to Prof. Adrian Bejan views, captured into this article published by Aerospace America, a fundamental law of physics will prevent the Personal Aircraft revolution to happen.

The passenger drones, sky taxis, and other personal aircraft names are buzzing and exciting the aviation industry – but Prof. Bejan explains us that flying is for faster travel over long distances, and not for short distances. In this last case, the economical movement is on land, and it is slower.

Source

• Adrian Bejan, Personal Aircraft: Why The Revolution Won’t Happen, Personal opinion, Aerospace America, May 2018.