I don't know, the roomba and other robots can find their charging stations. This one seems to use similar technology between the robot and the remote. So I don't see why it would have to be considered fake.
I'm not saying that it was all done in one take, but it was definitely edited. Consider the camera person having to constantly reposition themselves for each shot and then having to edit it down so that it doesn't look like crap with them moving around.