My choice would be the Civic GX.
http://automobiles.honda.com/civic-gx/
The Civic GX NGV: looks like a Civic, drives like a Civic, and runs on clean, domestic natural gas.
Engineered for the Environment
- Advanced Technology Partial-Zero-Emission Vehicle (AT-PZEV)*
- Fueled by Compressed Natural Gas (CNG) for nearly zero emissions
- Convenient Phill home refueling
- HOV access in many states
- 113-hp, 1.8-Liter, 16-Valve, SOHC i-VTEC® 4-cylinder engine
Civic Minded
- Aerodynamic exterior
- Two-tier instrument panel
- MP3/Windows Media® Audio (WMA) playback capability
*AT-PZEV rated by California Air Resources Board (CARB).
REFULING
Meet Phill, the first home refueling appliance available to owners of natural-gas vehicles.
Phill is a compact unit (30" x 14" x 14"), manufactured by
FuelMaker, that's easily installed to your home gas line, inside or outside your garage. This is the very same gas line you use to fuel appliances such as your gas stove. Phill is as safe and quiet as a clothes dryer. It's equipped with several built-in features like a methane detector, which can monitor for unlikely leaks and automatically shut down the system if necessary.
Refueling the GX may take up to 16 hours if the tank is virtually empty. This process might actually be more convenient than going to a gas station if you fill up each night when you come home. Phill is designed not to need any service or maintenance, but should you experience any problems, Phill Technical Support is standing by to help.
On the road
When you're out and about, please consider the following. A full tank of gas supplies the GX with a driving range of approximately 220–250 miles*. In most cases, this will allow you to travel to your destination and back home to refuel with Phill. But sometimes you'll need to fill up on the road.
At times like these, you can refuel in mere minutes at the numerous fast-fill compressed natural gas stations throughout California. Check out the California Natural Gas Vehicle Coalition Web site for a complete list of locations. Please note that most of these stations accept common forms of payment like Visa or MasterCard; however, a few stations require payment with a special "credit card" authorized by the station owner.
*Your actual driving range may vary, depending on driving habits, fill pressure and "fast fill" effects.