Chevy Bolt EV plant shutdown extended, due to slow Sonic sales

2017 Chevrolet Bolt EV electric cars outside dealership    [photo: Patrick Reid]One of the biggest tests of an automaker's discipline is what it does when sales start to ebb and inventories of unsold cars swell. Does it keep the production lines churning, and dial up its incentives to keep new-vehicle deliveries flowing? Or does it prioritize profitability and suspend production until inventories are back where they should...