If 392MPH sounds fast, consider this, these are gliders – they don’t have engines. If you want to understand the physics behind it, check out this flash animation, otherwise just enjoy the gliders slingshotting off air currents at 8x the speed of the surrounding air. The speed of the glider makes it pretty hard to see, so don’t blink or you’ll miss out. [DS Zone via Wired, Gizmodo]

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