GM says that it has tested the compressed natural gas (CNG) tank in the 2015 Bi-fuel Chevrolet Impala under normal and extreme conditions, exceeding both federal requirements and CNG industry guidelines. For example:
GM says that it has tested the compressed natural gas (CNG) tank in the 2015 Bi-fuel Chevrolet Impala under normal and extreme conditions, exceeding both federal requirements and CNG industry guidelines. For example:
