2003 Chevrolet Tracker Zr2 Sport Utility 4-door 2.5l on 2040-cars

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Why does the Corvette Stingray have so many vents? Here's why

Just looking at the new 2014 Chevrolet Corvette Stingray, it's not hard to see that the car's design was created with aerodynamics at the forefront, but Chevrolet designers point out exactly what went into designing the iconic coupe in a pair of recently released videos. The videos show the Corvette going through early design phases, including clay models and wind tunnel tests, as well as talking to the car's chief engineer, Tadge Juechter.
Both videos help explain various aspects of the C7 Corvette, but it's the aero tuning of the car that is most interesting. This includes extra attention paid to the lower air dam and vented hood to help reduce drag and lift, while the rear quarter inlets are for differential and transmission cooling. Juechter said that some of these aero-tuned elements were inspired from GM's involvement in racing.
If you have about five minutes and you can't get enough information about the new 'Vette, then check out the videos posted below.

GM veteran Bryan Nesbitt tapped to head Buick design

General Motors styling veteran Bryan Nesbitt (pictured above) took over a new role on Monday as executive director of global Buick design and global architectures. Andrew Smith, who previously did that job and also coordinated the look for Cadillac, has remained in charge of the pen at Caddy with this shift. Nesbitt rose to prominence when he designed the Chrysler PT Cruiser, according to Automotive News. He joined GM in 2001 and has been there ever since in multiple high-level roles. In 2007, he was appointed vice president of design for North America and was later briefly general manager of Cadillac in 2009-2010. Nesbitt took over as the vice president of GM's international operations design in China in 2011. This shuffle also moves Ken Parkinson, currently styling boss for Chevrolet trucks, to China as design vice president there. In addition, John Cafaro becomes the person in charge of the look for Chevy globally, rather than previously splitting that role between cars and trucks with Parkinson. GM Global Design Leadership Changes – effective June 1, 2015. Bryan Nesbitt, Design Vice President, GM China will repatriate to North America and assume the position of Executive Director, Global Buick and Global Architectures. He will be located in Warren, MI. Bryan will be the design Champion for Buick in the US and China. Ken Parkinson, Executive Director, Global Chevrolet Trucks and Global Architecture will assume the position of Design Vice President, GM China. He will be based in Shanghai, China. Andrew Smith, Executive Director, Global Cadillac and Buick Design will assume the position of Executive Director, Global Cadillac. He will continue to be the design Champion for the Cadillac brand. In addition, he will continue to lead the Global Color & Trim team. He will be based in Warren, Michigan. John Cafaro, Executive Director, Global Chevrolet Cars will assume the position of Executive Director, Global Chevrolet. He will be the design Champion for Chevrolet. In addition, John will lead the exterior components and accessories team. He will continue to be based in Warren, MI. The roles and responsibilities of Helen Emsley, Mark Adams, Carlos Barba, Clay Dean, Michael Simcoe, and Teckla Rhoades remain the same. Related Video: The video meant to be presented here is no longer available. Sorry for the inconvenience.

GM diesel pickups first to undergo extra EPA, CARB testing

The effects of Volkswagen's long-running diesel emissions evasion are starting to spill over to other automakers, but General Motors is taking things in stride. The 2.8-liter, four-cylinder Duramax in the 2016 Chevrolet Colorado and GMC Canyon is the first engine to get extra scrutiny by the Environmental Protection Agency and the California Air Resources Board, Automotive News reports. Rather than just the usual in-lab test, it's also being checked on the road. However, the extra evaluation shouldn't have any impact on when the trucks with his mill hit dealers later this fall. "We're in our final stages of the EPA certification, and our launch is on track," Chevy spokesperson Otie McKinley tells Autoblog. The four-cylinder diesel in the trucks makes 181 horsepower and 369 pound-feet of torque, and the automaker is touting low NOx production. In the announcement for the Colorado's specs, the company calls it "the cleanest diesel truck engine ever produced by General Motors." The tech includes exhaust gas recirculation to lower combustion temperatures and improve emissions. There's also a urea tank like on the bigger diesels for full-size trucks, and it gets refilled in time with oil changes. An indication on the instrument panel lets drivers know when that's needed, too. Even with the more demanding testing, the company doesn't seem too worried about the four-cylinder passing. "Part of our development process is on-road and off-road [laboratory] testing," Scott Yackley, Chevy Trucks assistant chief engineer, said to Automotive News. In the wake of the VW scandal, the EPA has pledged more rigorous testing. Before, on-road emissions evaluations were largely limited to heavy-duty vehicles, but the agency has decided to apply the checks more often to other models. There's also now greater cooperation with Canadian authorities.