Calif. Poised to Vote on New 'Clean Car' Rules

The head of California's air quality board on Thursday called proposed rules that would require automakers to build less-polluting cars and trucks by 2025 a historic move for a cleaner environment.

California Air Resources Board Chairman Mary Nichols said she hopes the rules to require that vehicles emit about 75 percent less smog-producing pollutants will "lead the nation and the world."

The new standards, which also include big cuts in greenhouse gas pollutants, would begin with new cars sold in 2015, and get increasingly more stringent until 2025. The rules also mandate that one of every seven new cars sold in 2025 in the state be a zero-emission or plug-in hybrid vehicle.