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March 3, 2015

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Parking robot "Ray" transports a car in Duesseldorf, Germany, Monday, 23 June 2014. The parking robot will see service for the first time at Duesseldorf Airport.

Federico Gambarini / AP

Parking robot "Ray" transports a car in Duesseldorf, Germany, Monday, 23 June 2014. The parking robot will see service for the first time at Duesseldorf Airport.