Checking to make sure the camera and bundled-in SD card work is integral to the process, but sometimes factory workers forget to erase the test footage. So: Drone arrives. Customer loads memory card. Footage of incredibly bored guy paints a strange portrait of said drone’s tedious birth.
source: http://gizmodo.com/dji-accidentally-gives-customer-a-tour-of-its-drone-fac-1788437604