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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.

Chevy rolls out Silverado HD High Country

It's been a good week for heavy-duty truck buyers. First, Ram revealed the Black Package for its HD trucks, then it rolled out its new Power Wagon, and now Chevy's getting in on the action with its Silverado High Country HD. Okay, so it may not pack quite the attitude of Ram's latest 2500-series offerings, but the High Country HD will come as a welcome addition to the Chevy Trucks range to those looking to pull their horse, boat or other trailer without skimping on creature comforts.
Rolled out a little under a year ago, the High Country trim is Chevy's answer to the likes of the GMC Denali, Ford King Ranch and Ram Longhorn. It has until now only been offered on the light duty, 1500-series Silverado, but now extends to the 2500 and 3500-series HD models, as well.
So what sets a High Country pickup apart from lesser Chevy trucks? You'll be able to pick it out based on its chrome horizontal grille, body-color bumpers, 6-inch tubular side steps, 20-inch chrome wheels (18-inch on the 3500 and 17-inch on the dualie) and, of course, plenty of special badging. But it's inside where the High Country makes its mark, with a cabin decked out in saddle brown perforated leather, seats that are both heated and cooled, eight-inch touchscreen with full MyLink suite, Bose audio and park assist functions front and rear to keep those color-keyed bumpers looking fresh. (Though Chevy hasn't yet showed us the interior of the HD model, it'll presumably look mostly the same as the cab in the 1500 High Country in the gallery below.)

Opel pulls out of Russia, GM to focus on Cadillac, 'iconic' Chevys

General Motors is going to realign its priorities in the struggling Russian marketplace, withdrawing its Opel brand and pulling out mainstream Chevrolet models. Instead, the General will take aim at Russia's well-established oligarchy, pushing Cadillac as well as "iconic" Chevrolet models, like the Corvette, Camaro and Tahoe. "This change in our business model in Russia is part of our global strategy to ensure long-term sustainability in markets where we operate," GM president Dan Ammann said in a statement. "This decision avoids significant investment into a market that has very challenging long-term prospects." Russian customers interested in an Opel or mainstream Chevys like the Spark, Aveo (the US market Sonic), Cobalt (shown above), Cruze, Orlando and the like have until December to snap up a car before the brands are pulled. "We do not have the appropriate localization level for important vehicles built in Russia and the market environment does not justify a major investment to further localize." Opel Group CEO Karl-Thomas Neumann said. GM will continue to offer service to customers in Russia. "We can assure our customers that we will continue to provide warranty, parts and services for their Chevrolet and Opel vehicles," Neumann said. Beyond realigning its brands in Russia, GM also announced that it would also be idling the company's factory in the country's second-largest city, St. Petersburg. This is the second time the St. Petersburg factory has been in the news – GM announced that it'd be idled for roughly two months back in February. Scroll down for the official press release from GM. GM to Change Business Model in Russia 2015-03-18 Focus on Cadillac and iconic Chevrolet vehicles Wind down Opel brand and sale of mainstream Chevrolet cars Idle GM Auto manufacturing facility in St. Petersburg Part of GM's strategy to ensure long-term sustainability in global markets DETROIT – General Motors today announced plans to change its business model in Russia. GM will focus on the premium segment of the Russian market with Cadillac and U.S.-built iconic Chevrolet products such as the Corvette, Camaro and Tahoe. The Chevrolet brand will minimize its presence in Russia and the Opel brand will leave the market by December 2015. "This change in our business model in Russia is part of our global strategy to ensure long-term sustainability in markets where we operate," said GM President Dan Ammann.