This came from an idea for smaller airports when someone said //" ...Airports I've seen are spaced out so the wingtip of each plane doesn't crash into anothe plane"//
Well, what if, during taxiing and boarding, the airplanes didn't have wings?
The ends of the wings would be made of seperate metal
plates joined together by a somewhat mor elastic substance. After landing, the pilot presses the big red button and the wings roll up to even with the turbine and the plane can taxi with almost the manuverability of a big bus. Airports can be plenty smaller than they are now, and passengers who like to sit on the window seat next to the wing have more to watch.
Before takeoff, the wings roll out and strong metal bars slide into place to keep them in shape. The wings contract a little so that the metal plates overlap and don't flop around.
Disadvantages: On an icy day, the pilot might have to say: "We are unable to take off because the airplane lacks useable wings at the moment"
A terrorist hacks into the planes controls and retracts the wings in mid flight and the plane plummets to its death.