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A technician (below) controls an unmanned electric-powered vehicle in Parma by a remote device. The vehicles, equipped with four laser scanners and seven video cameras that work in concert to detect and help avoid obstacles. (Associated Press)

A technician (below) controls an unmanned electric-powered vehicle in Parma by a remote device. The vehicles, equipped with four laser scanners and seven video cameras that work in concert to detect and help avoid obstacles. (Associated Press)

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