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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.

Tesla about to sell 50,000th Model S

Nissan sold its 50,000th Leaf a total of two years and two months after introducing the EV to dealerships. Tesla isn't as established as Nissan, and its Model S - with its higher levels of luxury and performance - costs multiple times more than the Leaf. Consider the Tesla's starting price of $70,000-plus (and easily much more with a bigger battery and a few upgrades), and compare that to the Leaf's base MSRP of just a bit over $30,000 before its 2013 price cut. It would make sense, then, that it would take the Model S longer to hit 50,000 unit sales. But, no. The Model S could meet the 50,000 sales milestone before the end of October (in fact, it may already have done so). This is just two years and three months after it launched in late June 2012. The Model S could meet the 50,000 sales milestone before the end of October. Tesla hasn't released its sales report for the third quarter, but the Palo Alto-based automaker sold 39,128 units of the Model S through June. Previously, Tesla estimated it would have 7,800 third quarter sales (putting it at 46,928 through September), other independent estimates put Tesla at 50,000 sales in late October. The Model S may not have beat the Nissan Leaf to 50K, but it's not hard to see how this is a win for the California automaker. Arguably, this is a case where we all win. Anytime some buys an EV instead of a traditionally powered vehicle - regardless of marque - that's less energy consumed while driving, fewer emissions and an example set to others who have yet to make the switch. It's hard not to be impressed by Tesla's relative success. Furthermore, Tesla coming so close to Nissan in selling 50,000 EVs is, above all, a testament to the desirability of the Model S, despite the Leaf's clear advantage in terms of attainability.

2014 Rogue kicks off production as 10,000,000th Nissan built in Tennessee

News comes across our desks all the time of one manufacturer marking some milestone or another. But Nissan has just announced a double-whammy: Not only has Nissan's assembly plant in Smyrna, TN, just built its ten-millionth vehicle, but that ten-millionth vehicle just so happened to be the first Nissan Rogue to be built in the United States.
The milestone arrives after over three decades of production that has included such nameplates as the Sentra, Altima, Maxima, Leaf, Pathfinder, Infiniti QX60, Xterra, Frontier, and now the Rogue. The latter crossover has swelled into Nissan's second best-selling vehicle, with demand growing by nearly 50 percent from 2010 to 2012. Now redesigned for 2014 and built locally, Nissan is evidently banking on demand continuing to rise.