The six largest automakers in the US asked a federal judge to toss out a lawsuit by the state of California that accuses them of harming human health and the environment by producing vehicles that contribute to global warming.
The US and Japanese auto companies filed a motion on Friday in US District Court in Oakland to dismiss the state's suit and an attorney for the carmakers said on Saturday that state officials who want to reduce auto emissions should do it through regulation, not litigation.
"It's the classic kind of case that the Supreme Court has said doesn't belong in federal court," said Theodore Boutrous, who represents Chrysler Motors Corp, General Motors Corp, Ford Motor Co, Toyota Motor North America Inc, American Honda Motor Co and Nissan North America Inc.
State Attorney General Bill Lockyer, who filed the suit in September, claims that automakers are violating public nuisance laws by making high-emission vehicles and should pay damages for polluting.
"The thrust of what we're saying is the technology to make vehicles that emit far less greenhouse gases exists," Lockyer's spokeswoman Teresa Schilling said. "They fight any attempt to get them to cut back on their pollution."
The lawsuit contends the state is already dealing with the harmful effects of global warming caused by rising emissions of carbon dioxide and other heat-trapping gases. Vehicles are the state's largest single source of greenhouse gas emissions.
The complaint cites reports that show rising temperatures will melt snowpack in the Sierra Nevada Mountains earlier each year, which will flood California's Central Valley and threaten the state's water supply.
Automakers are also wrangling with California over a 2002 law requiring them to cut emissions. Under the law, the California Air Resources Board has adopted standards designed to cut carbon dioxide emissions by cars and light trucks by 25 percent and from sport utility vehicles by 18 percent starting in 2009.
That law has since been copied by 10 other states.
The auto industry is challenging those regulations, arguing that such reductions can only come from stricter fuel-economy standards, which are the province of the federal government.
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