2007 Nissan Sentra S Sedan 4-door 2.0l on 2040-cars

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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.

Autoblog Podcast #380

Episode #380 of the Autoblog podcast is here, and this week, Dan Roth, Chris Paukert and Seyth Miersma talk about the Fiat-Chrysler five-year plan, the seeming demise of the Nissan Cube, and proposed legislation to require speed limiters with a 68-mph maximum on America's tractor trailers. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #380: Topics: Fiat-Chrysler five-year plan Nissan Cube on the way out? Big rig speed limiters coming? In the Autoblog Garage: 2015 Mercedes-Benz S63 AMG 2014 Chevrolet Sonic RS Sedan 2014 Honda Odyssey Touring Elite Hosts: Dan Roth, Chris Paukert, Seyth Miersma Runtime: 01:44:17 Rundown: Intro and Garage - 00:00 Fiat Chrysler Plan - 29:40 Nissan Cube - 01:07:33 Semi Speed Limiters - 01:17:33 Q&A - 01:27:35 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Auto News Earnings/Financials Plants/Manufacturing Podcasts Rumormill Chevrolet Chrysler Dodge Fiat Jeep Nissan nissan cube speed limiters

Nissan seeks tech tie-up without Renault as alliance nears end of road

Nissan is developing growth plans in areas such as software and electric vehicles (EVs) independent of Renault SA as the automakers work to finalize terms of a sharply limited alliance, said seven people with knowledge of the matter. Japan's third-biggest automaker by sales is seeking a partner outside the auto industry to develop software that connects vehicles to cloud-based services, two people involved in discussions said, without elaborating on candidates. That would address a relative weakness for Nissan as it tries to make cars "smarter and more connected," one of the people said. It is also working on an expanded strategy for all-battery and plug-in EVs for North American and Asian markets that will be for Nissan alone, they said. The revelations come as the alliance oversight board met this week to discuss a rebalance that will see Renault cut its stake in Nissan to 15% from 43% — matching the size of Nissan's stake in Renault — and Nissan gain reciprocal voting rights. Under the deal, to be finalized by mid-year, Nissan will also invest in the French automaker's new Ampere EV business. Imbalance had long riled Nissan executives who complained Renault did not pay its fair share of costs for innovation and development. Nissan's emerging strategy reflects a belief within the automaker that the 23-year-old alliance has run its course for many of the biggest challenges it faces, the people said. While Nissan sees continued savings in shared parts procurement with Renault, it has no plan to provide engineering support to Ampere, said two of the people, who all asked not to be identified because talks between the pair are ongoing. It also has no plan to provide its e-Power hybrid technology to a gasoline powertrain-focused joint venture Renault has with China's Zhejiang Geely Holding Group Co Ltd and Saudi Aramco Base Oil Co JSC, two of the people said. GOING SOLO Such go-it-alone thinking is shaping a longer-term plan that could be announced by year-end focusing on improved operational performance, electrification and software allowing self-driving and other "connected car" features, one of the people said. "Even if Renault gets something from Nissan, benefits moving in the other direction are hard," a second person with knowledge of Nissan's stance said.