If you are all too niave to believe that pilotless aircraft will begin with cargo, followed by many years of review and safety validation and followed eventually by pax pilotless then......or wait a minute, am I too niave?
20 years ago we hardly had Internet, let alone all the recent introductions of smart phones etc.
Another 20 years will bring about enormous evolution, unless of course it goes too far and gives 'some of the more idiotic' leaders of the world the avenue to bring about our own destruction.
While there are cargo planes or trains out there, they are the perfect avenue to test new concepts.
Just being real.