According to Gas 2.0, over fifty different manufacturers produce one hundred and fifty types of light, medium, and heavy-duty CNG vehicles, yet only one is commercially available to consumers - the Honda Civic GX, sold exclusively in New York and California. In case you don't live in one of those states and don't want to go through the process of buying in another state and shipping back to your own, there's always the option of converting your vehicle to run on natural gas.

Utah offers the cheapest CNG in the nation at $0.63/gal, while California residents will be paying around $2.50 - both still far lower than the price of unleaded gasoline in recent years. The low price of this fuel is fed by its availability in abundance and, more importantly, the ability to generate bio-methane from the natural breakdown of plant material.

The United States Bureau of Transit statistics reported just over 243 million vehicles registered in the country - as gasoline prices continue to climb we'll all be faced with growing pressure to modify our driving habits or our vehicles themselves. It's nice to know there's an alternative to the alternatives that grab the lion's share of media attention.