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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.

2018 Mazda6 refresh takes the car further upmarket

The 2018 Mazda6 is, on the surface, a very mild refresh. The front grille has been given more depth, and the fascia is generally cleaned up a bit, putting the design inline with the new CX-5 and future Mazda products. The interior has been given the same treatment: cleaned up and modernized. But throughout the car, some important updates under the skin make the 6 a more compelling product, and one that continues the company's push upmarket. The biggest change has already been partly revealed, and that's the addition of Mazda's turbocharged 2.5-liter four-cylinder. It's the same engine found in the CX-9, and Mazda has now revealed it will make the same 250 horsepower and 310 pound-feet of torque with premium fuel. The engine will also happily accept 87-octane, in which case the engine will make 227 horsepower. Though the addition of this engine is welcome, we're a bit disappointed to learn that it will only be available with a six-speed automatic transmission. If we're lucky, we might see Mazda add a manual option, since when Mazda launched the current Mazda3, the larger 2.5-liter engine was initially only available with an automatic. But try not to get your hopes up too high, either. The good news is that Mazda will continue to offer a manual transmission as well as an automatic with the base, naturally aspirated 2.5-liter four-cylinder. This engine will now feature cylinder deactivation, as will the 2018 Mazda CX-5. This system will shut off the cylinders on each end at cruising speed to improve fuel economy. Official fuel economy ratings for both engines have yet to be released. Aside from the powertrain, Mazda says it has made a few other mechanical improvements. The suspension has been retuned, and the steering rack rigidly mounted to the chassis to improve handling. Thicker sheet metal for the rear wheel wells, thicker trailing arms, and a bevy of braces have also been added in order to reduce noise for a more refined driving experience. The interior has also been updated for more refinement, particularly on the new Signature trim model. The sleeker interior design on all Mazda6s is joined by redesigned seats Mazda says are more comfortable. Those seats are now available with optional ventilation. A windshield-projected heads-up display, adaptive cruise control that can bring the car to a stop and resume accelerating, as well as an instrument panel with a configurable 7-inch screen are other options.

Mazda concept probably previews the next Mazda3 at the Tokyo show

This year's Tokyo Motor Show is shaping up to be an interesting one, with a Nismo Leaf, Mitsubishi e-Evolution concept, and a pair of interesting Toyota concepts already lined up. Now Mazda is joining with its own big reveal of two concepts. One is a design concept that will give us an idea of where the company is heading, and another is all but guaranteed to be our first look at the new Mazda3. There are a few reasons we say that one of these concepts has to be the next Mazda3. One is the fact that Mazda says it's a concept planned for production. The company also describes it as "a compact hatchback that fuses next-generation technology and design," and it uses the new Skyactiv-X spark-controlled compression ignition engine and "Skyactiv-Vehicle Architecture." Plus, just looking at the teasers, the design is a clear evolution of the current Mazda3 hatchback. It looks as though the hood and roofline curve a bit more, and some of the sharp creases of the current car have been smoothed out. The other concept Mazda is bringing to the Tokyo Motor Show seems to be just that, a concept. Mazda says it's just a design concept meant to exhibit how other Mazdas will look. Apparently it's a continuation of the company's current "Kodo" design language. Based on the teaser image, the car appears to be a sedan and consists mainly of clean, elegant curves, with hardly a crease anywhere except the edge of the trunk. The elegant lines are reminiscent of the RX-Vision concept, just with a couple extra doors and a different color. Mazda will have a couple of other new vehicles on display in Tokyo as well. The company will show the Japan-only CX-8 three-row crossover and a special-edition Roadster (Miata) Red Top edition. We presume it's a Miata with a red soft top. Stay tuned for more details from the full reveal. Related Video: