GM plans $290M investment in Kentucky Corvette plant
Includes technology upgrade to improve processes, with $3 million in tax incentives.
GM workers in Kentucky authorize a strike over safety concerns
Union cites safety issues and quality concerns, will strike if necessary.
Sinkhole swallows 8 classic cars at National Corvette Museum in Ky.
At least two cars could be saved, but salvage costs could run into hundreds of thousands of dollars, officials say.