Festo SmartInversion -- flying geometrical band with inversion drive
SmartInversion is a helium-filled flying object that moves through the air by turning inside-out. This constant, rhythmically pulsating movement is known as inversion and gives the flight model its name.
http://www.youtube.com/watch?v=CLxWnGKaY.....r_embedded
Вот это крутая штука.