Of the more than 15 million NGVs worldwide and 135,000 on U.S. roads, most are buses, refuse trucks and light- and medium-duty fleet vehicles, but manufacturers are now producing several models suitable for consumer use. Also, there are more than 100 models of gasoline-powered vehicles which can be converted to operate on CNG.
There are more than 1,300 NGV fueling stations available now and the number is growing fast.