Robotics are totally coming of age, as is artificial intelligence. Google just implemented one of these systems and it seems to be working well. I'm guessing cheap illegal labor will not be able to compete.
This robot has a complex AI that can produce a general awareness, though rudimentary knowledge of where it has been so it can logically compute where to go next to mow the grass. It is low power and has a low carbon footprint for those that care about such things. Dang impressive.
Link: - Google robotic mower
-S