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The California Air Resources Board has given a green rating to the 2011 Chevrolet Volt, the grade atop the page being ULEV (Ultra Low Emissions Vehicle). That's below the SULEV and PZEV ratings of cars you might not expect to beat the Volt, such as the four-cylinder Honda Accord and Volkswagen ...
The California Air Resources Board (CARB) voted last week to revise its ZEV (zero-emissions vehicle) Mandate that was first adopted in 1990 and has since been changed five times now. The newest revisions ease up on automakers, now calling for 7,500 zero-emission vehicles to be sold in California ...