Robotic vigilante: Homemade 'Bum Bot' patrols in Atlanta (click for full story)

ATLANTA - Cars passing O'Terrill's pub screech to a halt at the sight of a 300-pound, waist-high robot marked "SECURITY" rolling through downtown long after dark.
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The regulars hardly glance outside. They've seen bar owner Rufus Terrill's invention on patrol before — its bright red lights and even brighter spot light blazing, infrared video camera filming and water cannon at the ready in the spinning turret on top.