Chevrolet continued to break the mold in 2014, setting a new standard by adding a signature suspension and braking system to the Camaro that was based upon the Corvette Z06. The Express Diesel now boasted a new CNG-powered V8 engine, too, outdoing rivals for fuel efficiency. The Malibu got an updated stop-start system as well, enabling it to get nearly the same gas mileage as the hybrid version. On a roll, Chevrolet released a brand new Impala, adding a parking camera and forward collision warning system to the Sonic while also updating the Spark with a continuously variable transmission (CVT). Last but not least, the long awaited SS premium sedan was finally unveiled.