I was looking around for info on quadcopters and FPV* systems and found this site. Skip the first two videos unless you have an interest in the subject. The last video has some nice fly-overs (and -unders) of Amsterdam
http://www.droneflyers.com/2013/02/what ... all-about/the dogs
* FPV = First Person Viewer - A system that uses an on-board camera to allow the drone operator to see the drone's view and to fly the craft as though seated on it