Researchers from the computer science department at the Stevens Institute of Technology have added a 3G-radio to an AR.Drone. Because of the mobile hookup the AR.Drone can be controlled from a greater distance than the normal wifi connection and can be maneuvred into the range of a wifi-network. It could then attack that network and gain access to the network with the onboard software. And once it has gained access it could be used to issue commands to a botnet, acting as a command-and-control-server, powered by a small solar panel. Because the attackers would dial-in to the AR.Drone through the 3G-connection and the drone would us wifi to hookup to a third party network it would be much harder to find out who was responsible for the botnet attacks. You can read further details about the SkyNET project in the paper that was presented by the researchers at the USENIX Security Conference in August. Spooky stuff if you ask me.