thanks for the link, looks great! If you want a video of the drone itself take a look in here - http://www.omstudios.de/OMCOPTER-Flying-Epic

Looks impressive

There are also some nice, human-controlled (although I believe they can be automated using stuff from DIY Drones) open-source units from Quadrocopter: http://www.quadrocopter.us/

Nice. You can see the wash from the propeller(s) at 1:33 among other places. The choice of concrete surfaces was smart.

Thanks so much for this link. I had no idea this was even possible.