The fact that drones are being increasingly used by the military and personal weapons specialists worries many. But there is another side to the tech - for one thing, they're also being used by artists to create really awesome videos. And this is one of the best.
Firefly is a cross between Tron and Sidewalk magazine. Shot at night around empty city streets by the Czech promotional company Samadhi Production, it's a beautiful new take on urban sports.
The making-of video, posted below, is also worth a look. And if you want to make one yourself, you can get one of the drones for about £1,500 here.