A cleaning robot?

It would not surprise me if this would become the-must-buy for those with hardwood floors, the picture above is a long-exposure photo of Evolution Robotics’ Mint cleaning robot in action overnight.  As you can see the robot is fairly precise in cleaning every single piece of the floor?  As you know we have used a grass cutting robot for over two years and we could not be happier with the results.  Maybe this will become the next fad?