Back in May, we brought you news about Chevy’s Corvette factory and its 18-month shutdown of public tours beginning in June. At the time, Corvette expert and trusted source, Mike Furman, sent out an e-mail saying giving us a number of possibilities as to why the tours were being shut down. The distinct possibilities included the retooling of the factory to produce the mid-engined Corvette ZR1 “Zora” and the possibility that GM is switching from pushrod engines to DOHC engines. I personally speculated that it could be both – GM is trying to hide as much as it can about the ZR1, with tours obviously a serious threat to the way information is leaked these days and the switch to DOHC being a huge undertaking. Keep in mind that the ZR1 will also be based on the C7 instead of the upcoming C8, so it’s possible that GM is preparing the factory for C8 production. Now, as we approach fall and August is ready to kick off, GM is shutting down the Bowling Green plant. The shutdown is going to last through the month of October – something that is also causing a halt of all new Corvette orders until further notice.