Lawns are not really a big thing in Japan, so the lawn mower culture is very different. I remember lawn mowing in England as a childhood chore. First we used an old petrol-engine Mountfield that collected the clippings in a case at the back. I have bitter memories of lugging it around the lawn, and later trying to clean all the grass crud that had accumulated in the nooks and crannies. Next we got a Flymo that cut the grass as it hoovered around the lawn.
I thought these would be long obsolete, but they sell them in Japan. Not so much as a cheaper option for the lawn-owning poor (who do not exist) or the congenitally tight-fisted. The tag line is that these lawn mowers are quieter, so they won't disturb the neighbours.
They also have these:
I can think of many things that would hinder the robot on its path.
