Hi Boobala,
Interesting article on robotic mowers. The article was written by someone overseas, everything is in mm, cm and meters.
I think europeans have smaller yards than in the U.S., so this may work for them, I doubt it will catch on in the U.S. except for the laziest of lazy people.
Think of the lawsuit when your robotic mower runs over your neighbor's guinea pig,,,lol.
Me personally, your mower needs to burn fossil fuels, make you sweat when you use them (exercise) and open to modifications that would make Tim the Tool Man Taylor be envious of you.
Kind of like robotic vacuum cleaners,,,I personally wouldn't consider one.
Regards
Jeff