California’s new emissions rule speeds up the future of cars

What makes this such a big deal — aside from the fact that if California were a country, it would be the 10th-largest automobile market in the world — is that 15 other states follow the zero-emissions standards set in Sacramento. If they sign on to this mandate, too, the rule would cover more than one-third of all new vehicles sold in the country, essentially giving California the power to set emissions policy for the whole nation.