Technology is coming a long way. A friend of mine has created semi almost autonomous lawn mower. Pretty cool huh. He can mow his lawn from inside his house using his computer.
The basics of the mower is a RaspberryPi, one of those small single board computers that runs Linux.
He has a kickstarter up at https://www.kickstarter.com/projects/lawnmower/almost-autonomous-lawn-mower
Maybe you can see it for yourself!