The Andros isn't an autonomous machine. It was a delivery vehicle for a bomb, albeit an unusual one. Robot war theorist, author, and Popular Science contributing editor Peter W. Singer notes that American troops on patrol in Iraq equipped a relatively cheap, $8,000 bomb squad robot with explosives and used it against insurgents. The Andros is significantly more expensive, at roughly $200,000 in today's dollars. Cost isn't the only factor, but it's one of them, and having a robot to dispose of multiple suspicious packages and potential bombs is generally a better use than turning it into a one-use bomb cart.