Like a well-trained colony of fireflies, 50 glowing quadrocopters performed a magnificent ballet over the Austrian city of Linz last weekend. This event, "A Cloud in the Web," was the culmination of the 34th annual Ars Electronica Festival and attracted a crowd of 90,000 people.
The Ars Electronica Futurelab mounted the quadrocopters with an array of LEDs that could be programmed, along with the fleet's movement, by radio from the ground. According to the Ars Electronica press release [PDF], it was the largest outdoor flight of four-rotor drones in history. They took off over the Danube and swerved about in the night sky to the delight of onlookers.
But enough talk: watch for yourself.
Top image courtesy of Ars Electronica.