It looks like they show different prototype designs on their webpage: http://www.solveforx.com/wing/our-approach/ http://www.solveforx.com/wing/our-approach/ [

It looks like they show different prototype designs on their webpage: http://www.solveforx.com/wing/our-approach/ http://www.solveforx.com/wing/our-approach/ [including the old design. But in the image, they show something with helicopter-style rotors]