Currently, the industry is supported by various fuel standards, codes, and legislation . Although hydrogen can fuel an engine directly, or serve as a fuel additive, the current emphasis is on the use of hydrogen to supply fuel cells, which power electric vehicles. Hydrogen has also been blended with methane to form a fuel called Hythane . Methanol Like ethanol, methanol is blended with gasoline in a ratio of 85 to 15, to form M85. When burned in an engine, methanol produces low emissions .
Methanol is also the fuel for the direct-methanol fuel cell .
Developing a methanol refueling infrastructure is essential to expand the use of M85. Natural Gas Natural gas is a clean-air alternative to conventional fuels. At issue is the availability of refueling sites for vehicles that run on these fuels. Again, the availability of refueling sites is an issue for vehicles that run on this fuel.