The good news for GM these days is that no one has been consumed in a fiery death due to engine compartment fires since the Chevy Volt was discovered to spontaneous combust after accidents shortly after production began. The bad news for the company is that while Chevy Volt sales in June set a record, prior to June their sales for 2013 sucked despite general auto sales setting post-crash records. “With signs that sales of its Chevrolet Volt battery car could be coming unplugged,” reported NBC News in June, “General Motors is offering potential buyers as much as $5,000 in...