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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 Leaf battery cells put through torture test, live to charge again

One minor chink in the armor of the Tesla Model S is that a small number have caught fire, once their battery packs were penetrated. Nissan Leaf drivers, however, might just be able to weather such an event without an ensuing CarBQ. Our evidence for such a claim? A video that has surfaced of cells from a Leaf pack undergoing a battery of torture tests (pun somewhat-ashamedly intended). Shared by folks at the Hybrid Auto Center in Las Vegas – who offer for sale, among other things, used Leaf lithium battery modules – the footage shows salvaged cells being brutally assaulted with a screwdriver, and later, a propane torch. Granted, these tests are not the same thing as flinging a piece of metal into a working pack at 70 miles per hour, but they do claim to show that a puncture does not always equal a fire. Oh, and don't try this at home. When pierced through by the flat head tool, there is no explosion or eruption of flame. Instead, a rather modest wisp of smoke shyly emerges as the electrolyte next to the shorted area of the fully-charged foil pouch reacts with the influx of oxygen. Again and again, the blade descends, until the cell is riddled with holes. No fire. Amazingly, when connected with a voltmeter afterward there are still plenty of signs of life, and when it is charged and discharged (off-camera), it reportedly suffers only a slight loss of charge capacity. The video goes on to show another cell attacked with open flame with similar results. While the demonstration is, perhaps, somewhat crude, the message it sends is loud and clear: lithium batteries can be safe and rather robust, despite some freak accidents. Scroll below to watch the short presentation for yourself. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

China's largest dealer body pushes back against foreign automakers over huge inventories

Do not think for a second that automakers forcing inventory on dealers in order to pad the numbers is a ruse known only in the US. Stories of individual brands have hinted at the trouble Chinese dealerships are having trying to move units as the country's economic growth remains hot but comes off the boil, like the one revealing that 95 percent of Toyota-FAW showrooms are losing money. Yet Toyota isn't the only culprit, and the issue has become so dire that the China Automobile Dealers Association (CADA), the largest dealer body in the country, has written to the government to complain. Chinese car sales are expected to close out the year with an annualized growth of six-percent, down from last year's 14 percent when targets were set, while in the background the pace of overall economic expansion is the slowest its been since the early nineties. Automakers, shipping cars on schedule to make their earlier targets, have blown up inventories such that they are an average of 1.8 times monthly sales, when the preferred multiplier is from 0.9 to 1.2. According to the CADA, the price wars and necessary incentives mean that only 30 percent of dealers are operating in the black. That number is down a whopping forty percent since 2010. In response, Toyota has already said it will not make its 2014 target of 1.1 million cars sold. We're a long way from 2012, when Toyota planned on selling 1.8 million cars in China in 2015, a target that's now as realistic as a manticore. BMW, Honda and Nissan have erased numbers on their spreadsheets, too; BMW growth dropped from 20 percent to 8 percent midyear after it began "reducing wholesale supplies," and Honda has been reworking its plans as sales have decreased each of the past six months. It's a big deal for Chinese dealers to begin protesting publicly, the CADA saying, "In the past, dealers were angry, but dared not speak out. But now, they have to shout because the situation is getting so unbearable." With six-percent growth forecast for next year and dealers unwilling to remain underwater, The Year of the Sheep coming in 2015 could portend meaning beyond the zodiac. News Source: ReutersImage Credit: AP Photo/Andy Wong BMW Honda Nissan Toyota Car Buying Car Dealers