Solar Impulse 2 pilot talks to DWTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video07/27/2016July 27, 2016The first fuel-free aircraft to circle the globe has relied on 17,000 solar cells embedded into its broad wings. Pilot Bertrand Piccard speaks to DW about his journey.https://p.dw.com/p/1JWfBAdvertisement