RC Gas/Electric Lawn Mower!
 

This was too good not to post!

From Instructables:
Arduino R/C Lawnmower

http://www.instructables.com/files/d...NEO.MEDIUM.jpg

Pretty cool, although it would be cooler if it was all electric. ;)

Huh. OK, just thinking out the mechanics of mowing. Part of which is, um, like, recognizing that you need a POV that allows you to see where you are mowing, as apposed to the random robot mower that just keeps running all over the place until by exhaustion all the grass blades are cut. Which is OK in that case because you don't have to be there. But with an r/c mower you've got to be paying attention from some vantage point. But the disadvantage of not beng located above and behind the deck to aim it, kind of makes this a waste of some cool robotics. Now, if the lawnmower blade was exposed, and you called it a Battle Bot...