2015 Nissan Gt-r Black Edition 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.

Nissan is optimistic about FCA partnership, but wants the right terms

BEIJING – Nissan is optimistic about partnering with a combined Renault and Fiat Chrysler (FCA), as long as it can protect the ownership of technology developed over two decades of working with Renault, a senior executive told Reuters. The executive, who declined to be identified because he is not authorized to speak to the media, said he was cautiously optimistic about the possibility of generating "synergies" by sharing Nissan's autonomous drive know-how, electrification and greenhouse-gas-scrubbing technologies for powertrains. But he said the possible $35 billion merger of Renault and FCA would not give FCA the automatic right to use those technologies, which it needs to meet stringent emissions regulations and better compete in a industry being transformed by electric vehicles. He also floated the possibility that Nissan could look at boosting its stake in Renault, or a merged Renault-FCA, to gain more say in shaping the future of the alliance. "We would go ahead with partnering or cooperating with FCA only if we can guarantee tangible benefits from sharing technologies with FCA and only if we can work out conditions that are satisfactory to us," the Yokohama-based executive said. "If Renault wants to pursue this deal, we feel we need to look seriously at supporting them," he said. The executive's comments highlight how Nissan could look to leverage its advanced technology to gain greater bargaining power with a merged Renault-FCA. Renault is Nissan's top shareholder with a 43.4% shareholding, while Nissan holds a 15% non-voting stake in the French automaker. That unequal partnership has long rankled Nissan, which is the bigger company by far. A Nissan spokesman referred Reuters to a statement issued on Monday, where Nissan Chief Executive Hiroto Saikawa said: "I believe that the potential addition of FCA as a new member of the alliance could expand the playing field for collaboration and create new opportunities for further synergies." "That said, the proposal currently being discussed is a full merger which — if realized — would significantly alter the structure of our partner Renault. This would require a fundamental review of the existing relationship between Nissan and Renault," Saikawa said, adding that Nissan would analyze and consider its "existing contractual relationships". BOOSTING STAKE?

Nine cars we wish were convertibles

The snow has melted, the sun is shining, and the days are getting longer. At the Autoblog Detroit office we feel like our winter hibernation is finally over. And with warmer temperatures come visions of opening up a convertible roof and cruising. You know, just turn up the bass and let the Alpine blast. There are plenty of droptops on sale in the US, and more on the way (like the 2016 Mazda MX-5 Miata). That said, we always want more. More! More! More! In that spirit, we cooked up a list of nine cars aren't currently sold as convertible, but ought to be. Check out our picks, below. Summer's just around the corner. Subaru BRZ / Scion FR-S In some parallel universe, this car actually happened. Toyota showed us a FT 86 Convertible concept at the Geneva Motor Show in 2013, and we immediately started licking our chops over the thought of a rear-wheel-drive convertible based on the Subaru BRZ and Scion FR-S twins. These days, the MX-5 Miata is our only option for affordable roadster fun. A competitor to the Mazda seems like a no-brainer to us, especially since we have naught but good to say about the BRZ/FR-S as-is. Unfortunately in our present timeline, this car is as likely for production as a BRZ STI. Which is to say, not very. Dang. Lexus RC F Unlike the FR-S, a convertible from Toyota's luxury division might actually see the light of day. The current IS convertible is about to be phased out, and the Lexus LF-C2 concept from the 2014 Los Angeles Auto Show is really a thinly veiled look at a possible RC convertible. A droptop RC would be plenty good, but let's reach for the starts. What we really want is to run topless in an RC F, complete with that powerful, loud, 5.0-liter V8 engine. Lexus says the RC F is a true competitor to the BMW M4. If that's true, it only makes sense for Lexus to mimic the Germans and offer its performance coupe in a folding hardtop form. Maybach Landaulet Maybach is bach back, recast as an upper crust trim level for Mercedes-Benz. The Mercedes-Maybach S600 is seriously awesome, and more luxurious than a trip to the spa. But why not go a step into the truly ridiculous levels of extravagence and bring back that open-top Landaulet? We think your local princess will love this idea, and with better S-Class bones underneath, Jeeves will have a pretty enjoyable ship to steer, too. Besides, with that slick new Mercedes design language, a Landaulet redux wouldn't be nearly as hideous as the old model, pictured here.