Unmanned tracked fire fighting machine.
https://s3-us-west-1.amazonaws.com/h...fire_robot.jpg
Previously:
https://www.homemadetools.net/forum/...3576#post99483
https://www.homemadetools.net/forum/...7085#post84989
https://www.homemadetools.net/forum/...3122#post98114
https://www.homemadetools.net/forum/...890#post100252
https://www.homemadetools.net/forum/...779#post118917