468mph, and, it's a glider. Before you scream about the video being fake, look up Dynamic Soaring. Basically the pilots find a hill where wind gusts over the top. The airplane tacks in to the wind on the windward side of the hill, and comes back around through dead air on the leeward side. Every time it carves across the fast moving air current, it gains speed.It takes a quality pilot, because these carbon fiber gliders would rip you in half like you were soft butter.Watch the original high-def video, there really is an aircraft flying by, it's not just some guy waving a camera at the sky making wooshing sound-effects with his mouth. It's hard to see because of it's profile, and the speed, but it's there.