Although one person's comment on YouTube insists it is "a fake" due to the camera tracking being too precise, "Warthrox", the pilot, is flying the quad for a company called ImpulseRC who purports (contact them for info) to sell the aptly named Warpquad for around $675 so that you can build your own "fastest Quadrocopter [sic] in the Universe" which they claim the aircraft to be.

The video shows the quad blasting out of the camera's sight in under a second and then flying around within (and without) the frame at truly incredible speed.

Full story here.
Source: Discover