All these time, we believed that the Toyota Prius was the greenest car ever made in the entire auto planet.  Even I was tempted to follow Jessica Alba's footsteps in buying that fuel-efficient, eco-friendly car from the famous Japanese automaker. 

But just recently, a list, called the 2008 Green Book Online, is set to discount that claim.  Based from data gathered by the American Council for an Energy Efficient Economy (ACEEE), the Honda Civic GX outmaneuvered the well-acclaimed Toyota Prius in its list of 12 greenest cars.

According to honda.com, this sedan was especially designed for the environment with an Advanced Technology Partial-Zero-Emission, compressed natural gas fuel and 113-horsepower, 1.8-liter, 16-Valve, SOHC i-VTEC four-cylinder engine.  It also comes equipped with an aerodynamic exterior and a two-tier instrument panel.  In addition, it is capable of MP3/Windows media Audio playback. 

Records showed that the Honda Civic GX only sells more or less 1,000 units annually but sales was no big deal for non-profit ACEE that scrutinized all aspects of the vehicles' emissions and fuel economy beginning from their manufacturing process before they came up  with the list of 12 cleanest as well as meanest cars sold in America. 

Just in case you're interested to know the details, here is a complete list of ACEEE's 12 greenest cars. Following the Honda Civic GX was, of course, the Toyota Prius.  Third in rank was the Honda Civic Hybrid while the Smart ForTwo landed on the fourth spot.  Following closely were the Toyota Yaris, the Nissan Altima Hybrid, the Toyota Corolla, the Mini Cooper also known as the Clubman and the Ford Focus. Also included in the list were the Toyota Camry Hybrid, the Honda Civic and finally, the Honda Fit.

Now we know.