SULEV aka LEV II SULEV (Super Ultra Low Emission Vehicle)

Although SULEV emission standards are much stricter than LEV II or ULEV II, dozens of 2005 and 2006 vehicles comfortably nestle in this category, from the BMW 325i and Buick LaCrosse, to the Chevy Cobalt and Honda Accord. And we're talking clean. A SULEV produces 40 percent less carbon monoxide and 60 percent less nitrogen oxides than a ULEV II. In 100,000 miles of driving, a SULEV pumps a mere pound of hydrocarbons into the air--about the same created by "spilling a pint of gasoline" in the words of California's Air Resources Board. SULEV vehicles must also meet this tough standard for 120,000 miles. One bonus: in some states, if your SULEV is a hybrid or powered by an alternative fuel (such as compressed natural gas), you can use the carpool lane during commute hours. For some drivers, that's reason enough to go green.

2007 Toyota Camry Hybrid

The bottom line: Easy on the eyes and the pocketbook, user-friendly as well as ecofriendly, the Toyota Camry Hybrid is a fitting front-runner in the new generation of hybrid sedans.

2006 Mitsubishi Lancer Evolution

The bottom line: The 2006 Mitsubishi Lancer Evolution IX is a fantastically fun car to drive spiritedly and show off to friends, but the lack of in-cabin technology and sudden engine power can make it a bit tiresome in everyday driving.

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