Kansas biodiesel producer using CNG rather than biogas for truck fleet

In Kansas, High Plains Bioenergy produces biodiesel from used cooking oil, in large part from pig fat renderings from the nearby Seaboard Foods pig processing plant, but its trucks don’t run on biodiesel. Instead they run on CNG. The company’s 4 million market hogs that are transported annually to the processing facility will also go in trucks run on CNG. CNG prices are about $1 a gallon less than diesel, which is what the trucks used to run on. No mention was made as to why its own biodiesel wasn’t being used.