Solar Impulse

Quoted text from solarimpulse.com:

"The gigantic, but ultra-lightweight dimensions of this revolutionary airplane - capable of flying day and night without fuel - are its trademark feature.

To build it, the whole team had to push back the frontiers of knowledge in materials science, energy management and the man-machine interface.

Every one of its take-offs, propelled silently by its four electric motors, inspires us to consider using clean, new technologies to free our society, little by little, from dependence on fossil energy."

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