Our first meeting “face to face” ended with a big surprise.
Then we got accustomed to its presence as we were seeing it each morning and evening. We called it “a drone” though it was not flying but moving to and fro on the ground.
It was self-operating grass-cutter. From time to time it was driving to a dock to feed (with electricity) – of course by itself.
It kept the grass in the garden of our hotel neatly cut. Our daughter liked a lot to “play with it” 😉