The seventh generation of the plastic-bodied sports car is so new that GM is still keeping it under cover. All that has been publicly exposed to date is the redesigned crossed-flag logo and the engine -- a 6.2-liter, 450 hp. V-8. The 2014 Vette redefines "all-new." It has just two carryover parts -- a filter and a latch -- from the previous model, and the Corvette plant in Bowling Green, Ky. will be shut down for six months to get ready to build it. In January, GM pulls back the drapes completely, and production starts in the fall.