Hah! You may look at the current crop of mow bots. I know the better ones, after the initial break in are supposed to be pretty nice. Recharge themselves, "know" when to mow, lasers to prevent from running over stuff, memories of permanent items, IE trees, shrubs etc. Heard some will even weed wack for you too. Some say lazy, I say more time for working on what I actually want to work on rather than maintaining my yard within the specs of the yard nazi's.