Those looking to minimize their carbon footprints when driving will soon have two more options available; compressed natural gas conversions of both the Chevrolet Cruze and Sonic are imminent.
The conversions will be offered by a company called Crazy Diamond Performance. And, according to a release from the company, they have just received EPA approval on their retrofit systems for both, the 1.4 liter and 1.8 liter mills, found in the Cruze and Sonic.
Source
GM Authority