California leads the nation in policies that promote reductions of carbon emissions from road vehicles. It is unique in having a federal waiver that allows it to set its own, stricter emissions standards, along with a zero-emission vehicle mandate that requires automakers reaching certain sales volumes to sell a certain number of cars without... Which states follow California’s emission and zero-emission vehicle rules?
California leads the nation in policies that promote reductions of carbon emissions from road vehicles. It is unique in having a federal waiver that allows it to set its own, stricter emissions standards, along with a zero-emission vehicle mandate that requires automakers reaching certain sales volumes to sell a certain number of cars without... 
What if gasoline and diesel cars and light trucks were simply eliminated altogether from the new vehicles sold in a state? Residents of one state in the U.S. may, eventually, find out. California already leads the nation in promoting zero-emission vehicles, but the Golden State may soon take that policy a step further. DON'T MISS: Will California... 
For 50 years now, California has been at the very forefront of reducing vehicle emissions. It was doing so before the U.S. Environmental Protection Agency was even formed, and its powerful Air Resources Board has been a vital force in getting plug-in electric vehicles onto the state's roads. Despite the national political currents, the state will... ![Consumer Reports tests 2015 Volkswagen Jetta TDI diesel in 'cheat mode,' October 2015 [video frame]](http://images.hgmsites.net/tmb/consumer-reports-tests-2015-volkswagen-jetta-tdi-diesel-in-cheat-mode-october-2015-video-frame_100530187_t.gif)
The $14.7 billion diesel-emission settlement among Volkswagen and regulatory agencies required VW to buy back or modify almost half a million TDI vehicles from model years 2009 through 2015. While the buybacks have received the most attention—and most owners are expected to take them—the company also submitted plans to modify its... 
Twenty years ago today, the very first GM EV1 electric cars were delivered to 40 lessees in California in a blaze of publicity. Since then, plug-in electric vehicles have seen more than their share of ups and downs. That first EV1 was a high-tech two-seater created specifically to meet California's then-current zero-emission vehicle rules... ![Cumulative battery-electric and plug-in hybrid sales in California to hit 250,000 in Nov 2016 [PEVC]](http://images.hgmsites.net/tmb/cumulative-battery-electric-and-plug-in-hybrid-sales-in-california-to-hit-250000-in-nov-2016-pevc_100581772_t.gif)
It's long been obvious that California is the epicenter of emission reduction and electric-car adoption in the United States. And its outsize influence on U.S. environmental policy has global ramifications as well. Of the 1.25 million plug-in vehicles estimated to be on global roads by the end of this year, fully one-fifth are in the Golden State...