Hey guys, been lurking for sometime reading here and finally registered

Been googling personal VTOL (vertical take-off and landing) aircrafts recently and spotted a project called Vimana.
The key feature is it actually runs on Blockchain. At least that's what the webpage says. If I got it right, it uses blockchain to coordinate the flight route so that this flying things don't run in each other

http://vimana.global/

Have you heard anything about it?
And what do you think of personal aircrafts like this one in general?