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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.

Next-gen Nissan Leaf will look more mainstream, have more range

The next-generation Nissan Leaf battery-electric vehicle will look better and go farther on a single charge, company executives tell Automotive News. How much better and how much farther remains to be seen, as does the timing on when the new version will be available to the public. Nissan executive Andy Palmer, speaking recently at the Beijing Motor Show, implied that an electric vehicle would need to have a 185-mile single-charge range to be competitive with hydrogen fuel-cell vehicles, once those arrive in larger numbers. While Nissan boosted its single-charge range by about 15 percent for the 2014 model-year Leaf, the automaker would need to double it to reach that competitive threshold. This seems unlikely for the next-gen model, but we can start making our guesses as to how many more miles Nissan will put into the pack. Regardless, the next-generation Leaf, which may come out around 2017, will at least look a bit more mainstream while it reaches for more range, Automotive News says, citing Nissan global design chief Mamoru Aoki. Indeed, the car, which will keep its hatchback layout, will likely look less angular, said Aoki, who complimented Tesla for the way it styled its Model S luxury electric sedan. Nissan's Infiniti arm could also debut its delayed luxury electric vehicle in 2017, complete with the improved battery pack. Angular looks and all, Nissan continues to increase sales in the US. Leaf sales through April were up 33 percent from 2013, to 7,272 units after more than doubling sales last year to 22,610 vehicles.

Nissan tells Renault it is 'not opposed' to Fiat Chrysler merger plan

TOKYO – Nissan on Wednesday told Renault it wasn't opposed to its partner's potential $35 billion merger with Fiat Chrysler, the Nikkei newspaper said, as the two met to hash out the future of their alliance amid a deal that could upend the auto industry. The leaders of Nissan Motor Co, France's Renault SA and junior partner Mitsubishi Motors Corp gathered at Nissan's headquarters in Yokohama for a scheduled alliance meeting - one overshadowed by Fiat Chrysler's proposal this week for a merger-of-equals with Renault. The plan, which would create the world's third-largest automaker, raises difficult questions about how Nissan would fit into a radically changed alliance. Renault Chairman Jean-Dominique Senard arrived in Japan on Tuesday to discuss the proposed tie-up with Nissan, 43.4% owned by the French automaker. "We are not opposed," the Nikkei quoted an unnamed Nissan source who had attended the meeting as saying. The person also said "many details need to be worked out" before the Japanese automaker solidifies its position on the issue, the Nikkei reported. In a statement, the alliance members confirmed that they had "an open and transparent discussion" on the proposal. The deal looks designed to tackle the costs of far-reaching technological and regulatory changes, including the drive toward electric vehicles. Nissan, which has rebuffed overtures by Renault for a merger of their own despite their 20-year alliance, was blindsided by the discussions, sources have told Reuters, stoking concerns that a deal with Fiat Chrysler could weaken Nissan's relations with Renault. The tie-up also poses an additional challenge for Nissan CEO Hiroto Saikawa, already grappling with poor financial performance and an uneasy relationship with Renault after Nissan led the ousting last year of long-standing alliance chairman Carlos Ghosn. There have long been tensions between Nissan and Renault over the imbalance of power in their alliance. Nissan, the bigger company, holds a 15% non-voting stake in the French automaker, while Renault owns 43.4% of Nissan. Ahead of Wednesday's meeting, Japanese media quoted Saikawa as telling reporters that he would look at the potential opportunities afforded by a Renault-FCA merger. Credit ratings agency Moody's said it was vital for Nissan to stabilize its partnership with Renault to expand operational synergies and improve margins.