Volkswagen sales slowed after it was revealed that the company had been cheating emissions tests by outfitting some diesel cars with "defeat devices." Markus Schreiber/AP hide caption

itoggle caption Markus Schreiber/AP

David Whitcomb of Waynesboro, Va., says he paid a premium for the diesel engine on his 2015 Passat TDI because he thought it would mean fewer emissions. Courtesy of David Whitcomb hide caption

itoggle caption Courtesy of David Whitcomb

Capterpillar says it plans to lay off up to 10,000 workers, with many of those cuts coming in Illinois, amid a slide in equipment orders. Scott Olson/Getty Images hide caption

itoggle caption Scott Olson/Getty Images