Meet the Roomba for your grass. The Husqvarna Automower ($TBA) is an automatic, battery-powered mower that can take care of your lawn all by itself, using hidden wires to stay on track. The 19-pound mower is also relatively quiet, operating at 63 dB, compared to 95-100 dB gas mowers, and since it runs on batteries, it generates zero emissions. An eco-friendly robotic lawnmower? We're in.