Charter Fuels, in partnership with Alliance AutoGas, has coordinated the conversion of an Iowa County (Wis.) Sheriff's Office police cruiser to operate on propane autogas. Fox Valley Truck, an Alliance AutoGas certified conversion center in Appleton, Wis., performed the work on the 2010 Ford Crown Victoria.

"Propane autogas saves us about $1.50 per gallon on fuel costs, and in the long run, we'll save on oil changes and overall maintenance costs because it's a cleaner technology," says Sheriff Steve Michek. "The deputy who drives the vehicle has even noticed a slight improvement in vehicle performance driving on autogas."

The vehicle is currently refueling at a Charter Fuels autogas station in Cobb, Wis., but the county plans to install its own on-site fuel station through Alliance AutoGas as more vehicles are converted.

Charter Fuels has offices servicing 46 counties across Wisconsin, upper Michigan, northern Illinois, eastern Iowa and eastern Minnesota.