http://www.robotictechnologyinc.com/index.php/EATR
I can see this going terribly wrong.
The purpose of the Energetically Autonomous Tactical Robot (EATR)™ (patent pending) project is to develop and demonstrate an autonomous robotic platform able to perform long-range, long-endurance missions without the need for manual or conventional re-fueling, which would otherwise preclude the ability of the robot to perform such missions.
I can see this going terribly wrong.