We reported last week on how feebly powered, fuel-sipping 1990s-vintage hatchbacks have been lighting up the used car market recently due to skyrocketing gas prices. In an interesting twist to this phenomenon, I actually benefited myself somewhat from this hysteria when I had to sell my beloved natural-gas-powered 2006 Honda Civic GX last week on eBay, turning it into one of the smarter investments I made all year.

For more on the Civic GX's natural-gas powertrain and the innovative home-fueling station that keeps it going at a fraction of the cost of gasoline, launch the slideshow.

Behold the car that could displace the Toyota Prius as the eco-ride of choice. The new natural-gas-powered Honda Civic GX uses domestically produced fuel–the same stuff your gas stove burns–that costs as little as one third the price of gasoline. The American Council for an Energy-Efficient Economy calls it the cleanest-burning internal-combustion vehicle on Earth.