GRASP Lab Develops Acrobatic Helicopters

In news that seems directly out of a video game, these are either the most terrifying or most awesome things I think I've ever seen. The whirling dervishes in this video are the product of Penngineering's GRASP Lab, which seems to have perfected the nuances of four-rotor flight. Expect to see these hovering above every street corner in the post-apocalyptic future.