Leading the pack

Sales of hybrid cars and trucks rose 28% in 2006 from a year earlier, with more than a fifth sold in just three California cities.

Cities’ share of total hybrid auto registrations in the U.S. in 2006

Los Angeles: 12.2%

San Francisco: 8.1%

New York: 5.6%

Washington: 4.5%

Boston: 3.1%

Chicago: 3.0%

Seattle: 2.8%

Philadelphia: 2.7%

San Diego: 2.0%

Denver: 1.9%

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Source: R.L. Polk & Co. U.S. New Hybrid Registrations