Well I'm sure this isn't Ryobi approved, but it's still pretty awesome. Some one posted on Instructables on how to make a robotic lawnmower using a Raspberry PI and a bunch of Ryobi tools. I have to say it's some pretty impressive engineering!! I think it will be awhile before we see Ryobi making an official version!
Here is a news report about it and some in action video. Have to have an in action video for TIA visitors!!