@Vanessa Ikr. It's like the "Holy fluff, Google translate unexpectedly invented a language! Machines are evil o_o" thing last year.
Idk if it helps, but the tank thing as I learned was that they were using a very basic in memory machine vision learning (not ANNs), and taught it friendlies on runways, and enemies on sand. Because the tanks were minor artefacts, it couldn't tell friend from foe in the field. Just airbases from sand. So it was never put near a tank, and wasn't a mystery.