Solar Impulse is a solar-powered drone-plane that has just completed a trans-continental flight from north-western USA to New York City on the east coast.

Two months ago, Solar Impulse took off from Washington state in the north-western United States, with the mission to fly across the…

Read more: http://vr-zone.com/articles/solar-impulse-successfully-completes-cross-country-flight/44048.html