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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 gives Camaro Red, Black Accents for SEMA

Just the other day, Chevy announced a series of modified show cars it's planning to bring to SEMA this year. Now it has revealed full details on what could prove the most enticing among them in the form of a pair of Camaros. These new Red Accent and Black Accent editions are based on the new, sixth-generation 2016 Camaro SS. The former starts out as a Camaro SS convertible, done up in silver with red trim inside and out. It's got a leather interior, custom grille, hash-mark fender graphics, blacked-out bowtie badge, and 20-inch alloys. Even the engine is visually enhanced with a red cover. While it was at it, Chevy also dropped the suspension and fitted a new air intake and Brembo front brakes. Joining it is the Black Accent concept, based on a red Camaro SS coupe. As its name suggests, it's got a blacked-out aero kit, bowtie badge, and fuel cover, along with darkened tailllamps and satin black stripes. It also gets a black leather interior and its own set of 20-inch wheels, along with the aforementioned lowering kit, Brembo front brakes, air intake, and red engine cover. The Accent concepts are designed to showcase the extent of the accessories Chevy is offering for the new Camaro, and will be showcased at SEMA alongside modified versions of the Spark, Trax, Malibu, Colorado, and Sierra. Feel free to scope out the gallery above and the details in the press release below. Related Video: 2016 Camaro SS Concepts Designed to Inspire Red, Black Accent cars showcase new accessories, preview production packages DETROIT – Chevrolet introduced two customized 2016 Camaro SS concepts that illustrate the possibilities enabled by the new portfolio of Gen Six Camaro accessories and performance parts. Dubbed Red Accent and Black Accent for their respective design themes, each uses components Chevrolet will offer during the first model year of the new Camaro. "These are great-looking examples of what customers can do to personalize their new Gen Six Camaro," said Roger McCormack, director, Accessories & Performance Parts Marketing. "This will be the largest-ever portfolio of Camaro accessories and performance parts.

Bob Lutz builds the case for a mid-engined Corvette

Rumors of a mid-engine Corvette are like automotive industry folklore at this point. Every once in a while, news pops up that it might be happening or is under development, but nothing actually ever comes to fruition as something people can actually buy. The latest spy shots strongly suggest a mid-engine 'Vette is in the cards, yet again, possibly for 2018. Now, an op ed by former General Motors executive (and definite performance car fan) Bob Lutz in Road & Track gives the inside scoop on the history of one of these proposals and lays out how to make it happen today. According to Lutz, the company's engineers believed the C6 ZR1 was at the limit for front-engine, rear-wheel drive performance in that package, and the only solution was to move the powerplant behind the driver. Lutz even got then CEO Rick Wagoner on board. The scheme made it at least as far as clay models for mid-engine versions of the 'Vette and Cadillac XLR. Eventually, a lack of money got in the way, though, bringing the project to an end. Lutz puts a lot of faith in GM's current leaders, especially Mary Barra and Mark Reuss. He thinks the chances of a mid-engine 'Vette happening this time are better than 50 percent. The model, rumored to be named Zora, could offer over 700 horsepower in an ultra lightweight body and be priced at about $120,000 to "suck the doors off everybody." Head over to Road & Track to get some insights from this highly respected and entertaining auto industry veteran. Related Video: