OLYMPIA -- Gov. Gary Locke and legislative Democrats proposed Wednesday that Washington adopt California's vehicle-emission standards, the toughest in the world. Locke, a two-term Democrat who leaves office in January, also announced a freeze on state government purchase of four-wheel-drive sports utility vehicles. The state motor pool will begin shifting to hybrid vehicles. The proposal to adopt California's auto standards, effective the 2009 model year, is the centerpiece of the lame-duck governor's package of bills to combat global warming.