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Weekly Recap: GM plans massive new paint shop at Chevy Corvette factory

General Motors is laying out some serious green to maintain the Chevy Corvette's expansive color palette. The automaker is breaking ground on a new paint shop this summer that's part of a $439-million investment to upgrade the 34-year-old Bowling Green, KY, factory that builds the Stingray. The massive new structure will total 450,000 square feet, nearly half the size of the current 1-million square-foot facility. Construction is expected to take two years and won't impact Corvette production. The upgrades include new robots that save paint and create a better finish, longer, more efficient ovens to bake in the finish, and LED lighting. There's also a dry scrubbing booth technology with a limestone handling system that eliminates waste. GM has invested $135 million in the factory in last four years for the changeover to build the C7 and to relocate its Performance Build Center to Bowling Green. The improvements continue to modernize the Kentucky factory, which has become a tourist attraction in its own right, as more than 56,000 enthusiasts visited it last year. The upgrades are part of a $5.4-billion investment GM confirmed in April that will remake its US footprint in the next three years. The Bowling Green expansion underscores GM's continued commitment to the Corvette, which sold nearly 38,000 copies around the world last year, an eight-year high. "With this major technology investment, we can continue to exceed the expectations of sports car buyers for years to come," North American manufacturing manager Arvin Jones said in a statement. OTHER NEWS & NOTES Takata recall hits 34 million vehicles The National Highway Traffic Safety Administration expanded the Takata airbag recall to an almost unthinkable 34 million vehicles on Tuesday. The recall is part of an agreement reached by the two sides where Takata admitted some of its airbag inflators have a defect, and the deal compels the company to comply with all future regulatory actions and investigations. Takata's airbag inflators were produced with "a propellant that can degrade over time" and lead to ruptures, NHTSA said. Six deaths have been attributed to the flaw worldwide. Investigations conducted by Takata, automakers, and others have not determined the exact cause of the inflator problem, but NHTSA said moisture appears to alter the propellant's chemical structure. It then ignites too rapidly, creates too much pressure that ruptures the inflator, and blasts shards of metal at passengers.

Mazda6 diesel engine delayed over low performance, still coming

Oh Mazda... we had many hopes for the promised diesel four-cylinder in the Mazda6, but those have remained largely unfulfilled, as the oil-burning powerplant has failed to appear on dealer lots following its 2012 LA Auto Show announcement. Despite engineering issues that forced the company to announce that the program was delayed back in September 2013, Mazda remains adamant that the 2.2-liter Skyactiv-D is still coming to our shores. "We're still very much committed to diesel," Mazda's North American CEO, Jim O'Sullivan, told Automotive News. "We are still working on getting the performance aspects up to where we want them, and we do have a plan – an engineering road map – to get it done." According to AN, Mazda's initial plan with the 2.2-liter diesel was to build an engine so clean it could get by without an aftertreatment system, which generally accounts for the price premium of diesel engines versus their gas counterparts. The new system has come with performance issues, though, necessitating the delays. "If [we were] a commodity brand and didn't care about that, it would be on the market right now," O'Sullivan told AN. "But I know the people were expecting something from us, expecting certain drive characteristics and performance, and I didn't want to disappoint them." While O'Sullivan's defense of the diesel Mazda is admirable, the exec stops short of giving us an indication of when the new engine will finally arrive.

Mazda MX-5 Miata Cup racecar priced at $53,000

The 2016 Global MX-5 Cup is one of very few internationally competitive racing series that the average person can imagine (or afford) getting into. The ready-to-race Miatas are available to order now for $53,000 and deliveries are set to begin later this year. The first one is actually already on track as a pace car at Mazda Raceway Laguna Seca. With competition planned in North America, Europe, and Asia, all of the cup cars are identically prepared to emphasize drivers' skill rather than their bank account. The full list of Cup components hasn't been announced yet, but the roll cage and stripped interior are obvious. The 2.0-liter SkyActiv four-cylinder is still under the hood, too. The Global MX-5 Cup will also offer competitors big rewards, including a $200,000 scholarship for the season champion to move another rung up the motorsports ladder. In addition, Mazda will bring together the top racers from across the world to Laguna Seca to crown a series world title holder in a finale event. That winner will get a test In Mazda's prototype from the IMSA Weathertech SportsCar Championship. For now, Mazda is giving first priority to buyers planning to compete in its series. In the future, buyers of MX-5 Cup cars have other competition options, being eligible for some classes in Sports Car Club of America and National Auto Sport Association racing. Related Video: Mazda Announces Global MX-5 Cup Race Car Pricing - Initial Orders Being Accepted for the $53,000 Ready-to-Race 2016 MX-5 Miata - Oct 1, 2015 IRVINE, Calif., Oct. 1, 2015 /PRNewswire/ -- The Mazda MX-5 Miata is the most road-raced production car in the world. The reason is simple - great performance at an affordable price. The new Global Mazda MX-5 Cup race car follows that formula, and will be Mazda Motorsports' first-ever ready-to-race MX-5 Miata. The new race car will be available at the special introductory price of $53,000. The race car ordering process begins on www.MazdaMotorsports.com with first deliveries scheduled to begin later this year. 2016 Global Mazda MX-5 Cup Race Cars Having a turnkey, ready-to-race car removes the effort of engineering and costs of fabrication, enabling the racer to focus on racing. All racers can purchase identically-built race cars so that driving talent will be the number one determining factor for on-track performance, rather than budget, engineering capability or fabrication skills.