I would not want to stop these people. As an engineer, I find the technology very interesting and cool. And it is electric, so it is relatively less harmful tha

I would not want to stop these people. As an engineer, I find the technology very interesting and cool. And it is electric, so it is relatively less harmful than normal jets and helicopters. I do think that there are big challenges in people transport (mainly around cars and planes) and this does not solve any of those challenges, as it does not scale. So I see it as a gimmick: cool tech to show off.