As we suspected back in May based on spy shots, Chevrolet is adding a bi-fuel version of the tenth-generation Chevy Impala that can run on both regular gasoline and compressed natural gas (CNG).
The 2015 Chevrolet Impala builds on the attributes from its major redesign last year. A pair of new features enhances everyday driving: fuel-saving stop/start technology on the 2.5L engine and new ...