2012 Chevrolet Silverado 3500 Ltz H/d on 2040-cars

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This map reveals the cleanest vehicles based on location

Naysayers love to point out how dirty the electricity grid mix is when it comes to charging electric vehicles. Curmudgeons are eager to jump into any conversation about EVs to enlighten the lucky listeners about how plug-in cars contribute to pollution, sometimes even throwing in a dash of climate-change denial for good measure. (Thanks, buddy. Pray, tell me more about the plight of oppressed SUV owners.) Unless someone buys an EV just because they think they're cool (which, yeah, they often are), they probably have at least a passable understanding of their environmental pros and cons. As many EV owners are already aware, location has a lot to do with any particular plug-in car's carbon footprint. Still, there's always more to know, and knowledge is not a bad thing, especially if one uses it to do the right thing. That's why this handy-dandy map from Carnegie Mellon University is so interesting. CMU researchers have compiled information about the lifecycle greenhouse gas emissions of various EVs based on where they're charged, as compared to gasoline-powered vehicles. The researchers looked at the Nissan Leaf, Chevrolet Volt, and Prius Plug-In Hybrid versus the gasoline-dependent Toyota Prius hybrid and the stop-start-equipped Mazda3 with i-ELOOP and compared grams of CO2 emitted per mile. CMU takes into account the grid mix, ambient temperature, and driving patterns. CMU takes into account the grid mix based on county, as well as ambient temperature and driving patterns in terms of miles traveled on the highway or in the city. For instance, if you drive a Nissan Leaf in urban areas of California, Texas, or Florida, your carbon footprint is lower than it would be if you were driving a standard Toyota Prius. However, if you charge your Leaf in the Midwest or the South, for the most part, you've got a larger carbon footprint than the Prius. If you live in the rural Midwest, you'd probably even be better off driving a Mazda3. Throughout the country, the Chevrolet Volt has a larger carbon footprint than the Toyota Prius, but a smaller one than the Mazda3 in a lot of urban counties in the US. The Prius and Prius Plug-In are relatively equal across the US. Having trouble keeping it straight? That's not surprising. The comparisons between plug-in and gasoline vehicles are much more nuanced than the loudest voices usually let on.

Callaway rolls out radical Corvette C7 GT3-R at Hockenheim

Leave it to Callaway to take a badass Corvette and make it even more so. Case in point: the new Callaway Corvette C7 GT3-R you see here. It made its big debut this past weekend during the season finale for the ADAC GT Masters series at the legendary Hockenheimring – the on-again, off-again home of the German Grand Prix. Why in Germany, you ask? Because that's where Callaway Competition is based. The racing division got its start in Heilbronn as Woeher & Ciccone back in 1985. It joined with US-based Callaway Cars in 1988 to distribute its modified Corvettes in Europe, and branched out into constructing racing cars in 1994. And this is its latest project. Designed in partnership between Callaway Competition in Germany and Canadian designer Paul Deutschman, the new GT3-R replaces the previous C6-based Z06.R GT3. It packs a 6.2-liter V8 pumping 600 horsepower through an X-Trac six-speed sequential gearbox. And as you can see, it sure looks the part. Callaway will be offering the new GT3-R to privateer teams for entry in a variety of racing series around the world. But it'll also be fielding the example you see here, sponsored by Whelen Engineering that – like Callaway Cars – is based in Connecticut. Callaway Corvette C7 GT3-R World Debut at Hockenheim October 3, 2015 Hockenheim, Germany – October 3, 2015 – This weekend's ADAC GT Masters Season Finale was the backdrop for the unveiling of Callaway Competition's new Callaway Corvette C7 GT3-R. Following a brief presentation to media and invited guests, the successor of the C6-based Callaway Z06.R GT3 was displayed to the public for the first time on October 3, 2015 at the Hockenheimring in Germany. Constructors of GT race cars since 1990 and based in Leingarten Germany, Callaway Competition possesses a wealth of experience, technical know-how and a broad network of specialized professional partners. These elements were crucial to conduct such a large undertaking. After nearly two years of comprehensive planning, intensive development and expert fabrication of vehicle components, Callaway Competition completed the first C7 GT3-R just a few weeks ago. Its striking design comes as a result of the collaboration between Canadian designer Paul Deutschman and team owners Giovanni Ciccone and Ernst Wohr. Mike Gramke, Uwe Hoffmann, Florian Mohring and Andre Zanke were also heavily involved in the vehicle's development.

How Chevy Silverado, GMC Sierra will take on the Ford F-150 profit machine

FORT WAYNE, Ind. — When General Motors engineers were developing the 2019 Chevrolet Silverado and GMC Sierra pickup trucks, some of them joined public tours of Ford's Dearborn, Mich., factory to watch aluminum-bodied F-Series trucks go down the assembly line. The redesign of the Ford F-Series trucks, launched in 2014, set a new standard for fuel economy and lightweight vehicle construction. But armed with stopwatches and trained eyes, the GM engineers believed they saw problems. "They had a real hard time getting those doors to fit," Tim Herrick, the executive chief engineer for GM truck programs, told Reuters. His team did more intelligence gathering. They bought and tore apart Ford F-Series doors sold as repair parts. Their conclusion: GM could cut weight in its trucks for a lower cost using doors made of a combination of aluminum and high-strength steel that could be thinner than standard steel, shaving off kilograms in the process. These pounds-and-pennies decisions will have major implications in the highest-stakes game going in Detroit: dominance in the world's most profitable vehicle market, the gasoline-fueled large pickup segment. What's more, GM is banking on strong sales of overhauled 2019 Silverados and GMC Sierras to fund its push into automated and electric vehicles — a business many investors see as the auto industry's long-term future. The risks are high given the hits automakers have taken from U.S. President Donald Trump's trade policies. Rising aluminum prices spurred by Trump's tariffs are driving up costs on the Ford's F-Series, while rising steel and aluminum prices likewise drag on GM results. GM also has a significant risk should the United States, Mexico and Canada fail to agree on a new NAFTA trade deal, given GM trucks built at its Silao, Mexico, factory could face a 25 percent tariff if NAFTA collapses. Major profit per truck Interviews with GM executives and a tour at its factory here in northwest Indiana provide a detailed look inside GM's plan for the most important vehicles in its global lineup. These big pickups are everything Tesla's Model 3 or Chevy's Bolt electric car is not. The mostly steel body is bolted to the truck's steel frame, rather than the one-piece body and frame electric vehicles. The majority of trucks will have a V-8 gasoline engine powering the rear wheels — like the classic GM cars of the 1950s. Some Silverados will have new four-cylinder engines, but there is no electric or hybrid offering as of now.