VIDEO: Klemens Torggler's Mesmerizing, Rotating Door

Austrian company Klemens Torggler have recently invented the "Evolution Door," a very cool new door that slides itself open/closed - without the use of tracks. A special system of rotating squares means the door just requires a gentle nudge to close, and then momentum takes care of the rest. Words can't really explain the cool factor, so check out the video above and another after the break!