The greenest cars sold in the U.S. are both made by Honda, says the American Council for an Energy-Efficient Economy in its annual guide to cars and trucks. The groups ranked more than 1,000 vehicles in the model year 2001 and found that the Honda Civic GX, which runs on compressed natural gas, and the Honda Insight, a gas-electric hybrid, were the most environmental on the road. The hybrid Toyota Prius came in third. The GMC Sierra, Dodge Ram Pickup, and the Ford Excursion, as well as a Ferrari sports car, brought up the rear.
