There are more than a dozen alternative fuels in production or under development for use in alternative fuel vehicles and advanced technology vehicles. The federal Energy Policy Act of 1992 identifies six of these fuels as alternative fuels. Private entities and governmental fleets are the primary users of these fuels and vehicles, but consumers are gaining interest in them. This has helped to provide a boost for the infrastructure and availabilty for consumer use. When using alternative fuels as a replacement for or in conjunction with gasoline, we are reducing petroleum use and vehicles emissions. All alternative fuels can be domestically produced, and most provide significant air quality benefits when used as a vehicle fuel.