I can sit on my deck and watch my lawn mower cut my lawn? I like it...
Just buy Emo grass seed this spring. The lawn will cut itself....
On a more serious note, the former staff of Mondo 2000 must be having a hell of a celebration right now. (Old cyber/futurist/hacker publication)
They already make (expensive) autonomous robotic electric lawnmowers, mostly for disabled people. Similar to Roomba technology.
They notice that if you use them to cut your lawn frequently, like three times a week, it looks great.