Calif. sues EPA over tailpipe rules

SACRAMENTO, Calif. - California sued the federal government in its struggle to set the country's first greenhouse gas limits on cars, trucks and SUVs, asking the Environmental Protection Agency to review its decision to deny the state a waiver that would allow it and 16 other states to regulate emissions. ........http://news.yahoo.com/s/ap/california_greenhouse_gases;_ylt=ArYYmZzEVsRRQ_.cxHpAhbzYeMUA