Staff prepare the Solar Impulse 2 aircraft before it is unloaded from a cargo aircraft November 23, 2016 by arshad Staff prepare the Solar Impulse 2 aircraft before it is unloaded from a cargo aircraft in Duebendorf near Zurich, Switzerland, November 22, 2016. Solar Impulse plane completed a round the world flight without fuel in July 2016 in Abu Dhabi. REUTERS