During a test run of the DJI Phantom II quadcopter on July 22, 2014, the quad flew away and landed in a field. This video was recorded and shows its 2300-meter-long adventure through the University of York campus and to a nearby school field.
Dave Hay, from the Environment Department, put this video on YouTube to share:
Here is an approximate flight path and the KMZ file is available here. [KMZ in ZIP folder]