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A model of electronically controlled tractor is seen during a... News PhotoCeBIT,Control,Germany,Hanover,Horizontal,Lower Saxony,Science and Technology,Technology,Tractor,TradeshowPhotographer Collection: AFP 2013 AFPA model of electronically controlled tractor is seen during a demonstration at Fraunhofer institute stand at the 2013 CeBIT technology trade fair on March 5, 2013 in Hanover, Germany. CeBIT will be open March 5-9. AFP PHOTO / CARSTEN KOALL (Photo credit should read CARSTEN KOALL/AFP/Getty Images)