He broke off as the Duke kicked on the jet brakes. The ship bucked as its tail pods whispered to silence. Stub wings elongated, cupped the air. The craft became a full 'thopter as the Duke banked it, holding the wings to a gentle beat, pointing with his left hand off to the east beyond the factory crawler.
I'm not sure it's quite as autonomous as the description suggests. What I recall from Festo's own documentary (and this seems to be consistent with their website) is that it can sense the wing position and do core things like keep itself airborne, but directional control is done by a remote operator.
Either way it's a magnificent piece of engineering, especially seeing it fly out over the waves with other gulls.