I want one of these and I don’t even have a lawn. The Evatech Hybrid Goat Robot 22T is a remote controlled super lawnmower with tank treads. This mower can handle all types of terrain including steep inclines (up to 70 degree slopes!) and the remote works up to 2000 feet away. The 190 pound mower costs a mere $12,000 and is designed for commercial uses (and commercial budgets, obviously). You can also attach a snowplow for winter use.
GreenWorks 25302 G-MAX 40V Twin Force 20-Inch Cordless Lawn Mower, (1) 4Ah (1) 2Ah Batteries & Charger Included