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The article focuses on California's transportation strategies to reduce vehicular emissions of greenhouse gases (GHGs). It states that the European Union and other governments have adopted the executive order issued by California Governor Arnold Schwarzenegger in 2005 which required the state to decrease GHG emissions by 80 percent from 1990 levels by 2050. It also highlights California's implementation of low-carbon fuel standard (LCFS) and the development of low-carbon alternative fuels.

The article reports on the refusal of the U.S. Environmental Protection Agency (EPA) to regulate greenhouse gas emissions from motor vehicles in California. Stephen L. Johnson, EPA administrator, announces that their agency would not grant a waiver under the Clean Air Act authority since California has not given enough conditions for regulating the emissions. The decision of EPA has directed Governor Arnold Schwarzenegger and 13 other governors to file a lawsuit to reverse the decision on the basis that the disapproval of EPA was without merit.