a bunch of my neighbors have those and they look cool. one of my neighbors has one of the roomba ones that just mows on its own but I can't tell if it does a good job or not. I want to go see because outside of mowing over a billion whiffle balls and small children and whatnot it seems like a no brainer. AND one of my neighbors has a remote controlled one like from Honey I Shrunk The Kids and it even looks like it's a homemade thing because it is not, like, sleek looking. I'll try to grab a pic of it sometime. the kid is always in the driveway driving it around the grass.