Build your own RC lawnmower

Sure, you could be boring and just buy a remote control mower all primed and ready to go, but where's the fun in that? Friendly hacker Terry is sharing his instructions for building your very own Destroyer of Lawns, and it doesn't sound too terribly hard as far as awe-inspiring hacks go. The lawnmower cannibalizes parts from a powered wheelchair, requires a bit of electronics knowhow to get the RC bits to interface with the wheelchair control, and the rest is pretty much welding. The Hack-A-Day folks recommend recommend a failsafe for shutting off the mower if it loses radio communications, but they were always worrywarts like that. - engadget.com

Now thats time well spent if you ask me...