This human-powered helicopter has the span of a Boeing 737

Filed under:Videos,Autoblog Minute,Original VideoIt's not just about flapping your arms really fastContinue reading This human-powered helicopter has the span of a Boeing 737 This human-powered helicopter has the span of a Boeing 737 originally appeared on Autoblog on Thu, 31 May 2018 19:00:00 EDT.Please see our terms for use of feeds. Permalink |  Email this | Comments