Now this is a robot mower…can do brush, run for a long time…Only costs 30 grand .
http://gizmodo.com/5993774/a-badass-remote-tank-mower-that-could-probably-clear-a-forest?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+gizmodo%2Ffull+%28Gizmodo%29