Beta's Alia aircraft appear to have flown more electrical air miles than anything else out there, and to the stable they added a version stripped of all four lift motors so as to retain only the cruise motor at the rear: apparently it's called an 'airplane' if you do this. But 'one airframe, two configurations' is an ingenious economic model and one that is encouraging should we be able to evaluate two forms of catamaran, which in one case is only able to cruise on water and in another is able to hover and fly in ground-effect by adding as few as two lift motors.
