Gas nears $4 a gallon in California: Will it give plug-in vehicles a boost?

Gas prices, San Francisco, CAEyes are turning to California as gasoline prices near the $4-per-gallon mark, raising questions regarding how consumers will react if fuel prices cross that critical threshold. The cost per gallon for premium fuel has already eclipsed the $4 mark in some locations, with prices for regular creeping up behind it. Bloomberg reported last week that...