John Deere doesn’t need to impress you. John Deere is an icon, and icons don’t have to innovate all that often. But when the competition starts banging out robotic lawnmowers, it’s time to follow suit. The Tango E5 goes about its business in your yard (not the way your dog does), slicing and dicing grass within a range of 1,800 square meters; a distance determined by a boundary wire. When it loses juice, it simply motors back into its charging station. Impressed? Yup. John Deere thought so.