This combination of Associated Press file photos shows a worker, left, assembling a motor in a Mercedes Benz factory in 2008 in Berlin, and a robot, right, painting a brake drum at Webb Wheel Products, in 2013, in Cullman, Ala.. Thanks to robots, Webb Wheel hasn't added a factory worker in over three years, though it's making 300,000 more drums annually, a 25 percent increase.
Section:Photo
