Boeing X-51 - The Boeing X-51 (also known as X-51 WaveRider) is an unmanned scramjet demonstration aircraft for hypersonic (Mach 6 approximately 4000 miles per hour (6400 km/h) at altitude) flight testing. It completed its first powered hypersonic flight on 26 May 2010. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Mean Of Transportation