A model presents the Flesby, a one-seater mobility concept car, during a media preview of the 45th Tokyo Motor Show in Tokyo, Japan on October 25, 2017. Japan's flagship automakers present their futuristic visions for the post-fossil fuel era at the Tokyo Motor Show that kicks off Wednesday. (Photo by Kim Kyung-Hoon/Reuters)

Models get ready backstage before the presentation of the Etam Live Show Lingerie at the Fashion Week in Paris, France, September 27, 2016. (Photo by Charles Platiau/Reuters)

A three-seater Toyota Kikai concept car is displayed during the 2016 CES trade show in Las Vegas, Nevada January 8, 2016. (Photo by Steve Marcus/Reuters)

Women take pictures by a vintage car during the 2019 GUM Motor Rally featuring classic cars in Moscow, Russia on July 28, 2019. The youngest car at this year’s rally is 35, the oldest – a GAZ-A convertible – is 85. (Photo by Artyom Geodakyan/TASS via Getty Images)

Model Jennifer Hawkins showcases designs by Yeojin Bae on the catwalk at the Myer A/W 2012 Collection Launch on March 1, 2012 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

A Kevo smart lock is demonstrated during the 2015 International Consumer Electronics Show (CES) in Las Vegas, Nevada January 4, 2015. The lock, which opens with a smart phone App and a touch, is smart enough to know what side of the door you are on and won't accidentally unlock the door when you are inside. A new subscription service offers unlimited e-keys and other benefits, a representative said. (Photo by Steve Marcus/Reuters)

Models walk the runway at the annual Victoria's Secret fashion show at Earls Court on December 2, 2014 in London, England. (Photo by Tim P. Whitby/Getty Images)

Microsoft co-founder Paul Allen has spent the last six years working on a giant aircraft capable of launching rockets to space. Today, his company Stratolaunch Systems literally rolled that plane out of its hangar in the Mojave Desert for the first time ever.