Tour de Texas

Any transportation fuel other than gasoline or diesel is considered an alternative fuel. Alternative fuels can be more economical, especially over the long run, because some are less expensive than conventional fuels and are easier on the engine. Also, they reduce the United States' dependence on foreign sources of petroleum and can contribute to cleaner air by emitting less pollution.

Two problems with getting people to switch to cleaner energy sources are that the fuels are unfamiliar and not as widely available as gasoline and diesel. The two most widely available alternative fuels in Texas are compressed natural gas and propane.