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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.

VW Finds CO2 'Irregularites', SEMA Recap, and More | Autoblog Minute

Volkswagen's diesel emissions scandal gets a new wrinkle, US regulators hit Takata Corporation with a substantial fine, and we head to Vegas for a look at tuner paradise at the 2015 SEMA show. Autoblog Senior Editor Greg Migliore reports on this edition of Autoblog Minute Weekly Recap. Acura Chevrolet Honda Mazda Mitsubishi Toyota Autoblog Minute Videos Original Video Acura Legend

Next-gen Toyota Tacoma to debut at Detroit Auto Show

Toyota's confirmation comes on the heels of General Motors' successful launch of its own midsize pickups. The next generation of the Toyota Tacoma pickup truck will be revealed in January at the Detroit Auto Show, a top executive confirmed Thursday. Bob Carter, senior vice president of automotive operations for Toyota, offered no other details, but the new version of the pickup is expected to have significant upgrades compared with the aging model on sale now. Our spy shooters caught a prototype testing this summer, and rumors of the new generation have been swirling for months. We've also previously reported that Toyota is planning to ramp up production next April at a factory in Mexico that builds the Tacoma. Toyota's confirmation comes on the heels of General Motors' successful launch of its own midsize pickups, the Chevrolet Colorado and GMC Canyon, which have garnered awards, positive reviews and solid sales since they arrived in showrooms this fall. It's unclear how large the new Tacoma will be, especially considering that the Canyon and Colorado flirt with fullsize territory. The Tacoma was last updated in 2012, and the segment has changed dramatically since then with the addition of the GM trucks. Another Tacoma competitor, Honda's aging Ridgeline, is also expected to re-launch in 2015, which would leave the Nissan Frontier as the oldest truck in the field. Tacoma sales have slipped 4.1 percent to 140,757 units this year, though they posted a 3.3-percent gain in November. Meanwhile, Carter also said Lexus will reveal two performance vehicles, though he didn't elaborate. "I'll leave it at that, but I promise you'll enjoy it," he said coyly. Lexus just showed the LF-C2 convertible concept at the Los Angeles Auto Show.