Things are happening faster than even I had thought possible: http://www.mynewsdesk.com/no/rollsroyce/pressreleases/to-nye-ferger-vil-faa-autocrossing-fra-rolls-royce-1895677
There will still be crew to handle drive on/off and a Captain in the wheelhouse for the time being, but the last is mainly because the rules are not yet changed to where these ferries can go fully automatic.
Engineers??? I don’t know whether the rules still require those when there are no engines, only batteries and electric motors.
I assume somebody will have to make sure heating and toilets for the pax work though.