The Solar Impulse lands during a test flight at Moffett Field NASA Ames Research Center in Mountain View. Sleek! The solar-powered plane, one that has "wowed aviation fans in Europe," took an early morning test flight over the Bay Area today. Considered the world's most advanced sun-powered plane, AP notes that "the Solar Impulse is set to take off from Moffett Field in Mountain View at first light for a two-hour practice run leading up to the start of a multi-city, cross-country tour."