he lives so far from USA, and shipping large objects can be expensive,
the same way he has built boats in the past, upside-down. Notice how Bill has
assembled the wing trusses first, and then, with the attachment straps in place,
he's using the wings as jigs for assuring that the main 96 & 127 frames are in
the precise place and angle needed for hands-off flight a few years from now.