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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.

Nissan Murano hybrid greens up Shanghai

Nothing says summertime like a muscle car with a ragtop. Or, in China's case, a hybrid crossover SUV, right? So it's a good thing Nissan plans on starting sales of a hybrid variant of its Murano in China for the upcoming warm weather season. Nissan showed off the Murano Hybrid at the Shanghai Motor Show with a supercharged engine that is paired with an electric motor. The company says the powertrain will deliver the fuel economy of a 2.0-liter engine and the power of a 3.5-liter V6 engine. Nissan didn't release actual specs of the engine nor any fuel-economy figures. Back in 2013, Nissan was working on expanding its hybrid choices, including hybrid variants for both the Murano and the Rogue. This powertrain choice makes some sense, since it could be difficult to wring a decent single-charge range out of those relatively heavier vehicles if they were all-electric. With that in mind, take a look at Nissan's press release below. NISSAN APPEALS TO CHINESE WITH TWO WORLD PREMIERES: LANNIA AND MURANO HYBRID AT AUTO SHANGHAI 2015 Lannia makes global debut to capture the hearts of young Chinese customers All-new Murano Hybrid offers excellent fuel economy and driving performance in the luxury SUV segment Customers in China can begin ordering GT-R Nismo and 370Z Nismo today SHANGHAI, China (April 20, 2015) – Nissan unveiled two all-new production models, Lannia and Murano Hybrid, along with two Nismo products, GT-R Nismo and 370Z Nismo, at Auto Shanghai 2015. "These innovative vehicles represent the start of an exciting new chapter in the story of Nissan's presence in, and commitment to, China," said Nissan President and CEO Carlos Ghosn. "Nissan's growth strategy in China will continue to reflect our commitment to use local engineering and manufacturing. And we will maintain our support for China's efforts to promote more efficient and sustainable transportation. On both of these fronts, Lannia and Murano Hybrid will lead the way forward." Highlights of the Nissan display: Building on Nissan's longstanding success in the sedan market, Lannia delivers a fresh, distinctive personality that China's young generations embody. As the first product developed and designed for the young Chinese generations, especially those in their 20s and 30s today who are seen as energetic trendsetters, Lannia is a tangible expression of the company's commitment to China.

Nissan quietly, quickly installing more CHAdeMO stations

Nissan Leaf electric-vehicle sales continue to grow. And the number of US fast-charging stations that the Leaf can use are growing, well, faster. As it should be. Nissan has made good on its early-2013 vow to help ensure that the number of CHAdeMO stations in the US tripled by mid-2014, with Atlanta, San Francisco, Los Angeles and Dallas emerging as the most prevalent US markets, Green Car Reports says. In fact, the number of such stations, which can charge a Leaf to 80-percent battery capacity in about a half hour, has jumped to 633 from about 160 as of January 2013. About 180 are at Nissan dealerships, and that number should continue to surge since Nissan plans to aggressively add fast-charging stations through next March. Nissan spokesman Brian Brockman, in an e-mail to AutoblogGreen, confirmed those numbers and added that companies such as NRG, through its eVgo program, are also adding fast chargers throughout the country. The continued increase is good news for drivers of the Mitsubishi i (okay, we admit, there are not that many of them out there) and future drivers of the Kia Soul EV, as both of the models are CHAdeMO-compatible. Granted, the US has nothing on Europe, where the number of CHAdeMO stations has jumped to more than 1,000 from about 600 stations early last year. Nissan expects the continent to have about 1,800 fast-charging stations by year end. Still, the number of US CHAdeMO stations dwarfs the number of Tesla Motors' Supercharger stations, which total about 100.