Who forgot to close the door? A machine at a Perm-based research lab made a break for it after an engineer at Promobot forgot to shut the gate. The wayward bot — designed to roam, engage with humans and promote products — dashed a short distance into the street, where its battery promptly died, causing a traffic jam. Police were called to direct traffic around the runaway until someone wheeled it back to captivity. It remains to be seen if this was the start of the robot revolution.