Chevrolet unveiled the 2014 Cruze Clean Turbo Diesel Thursday, February 7, 2013 at the Chicago Auto Show in Chicago, Illinois. Clean diesels generate at least 90 percent less Nitrogen Oxide and particulate emissions when compared to previous-generation diesels. Turbocharging helps deliver a segment-leading 148 horsepower and 258 lb-ft of torque with an estimated 42 mpg highway. (Photo by Brian Kersey for Chevrolet)