Mountain View, 24 April 2016 – Solar Impulse 2 (Si2) – the first solar airplane capable of flying day and night without using a drop of fuel – left Hawaii on 21 […]
Mountain View, 24 April 2016 – Solar Impulse 2 (Si2) – the first solar airplane capable of flying day and night without using a drop of fuel – left Hawaii on 21 […]