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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.

Automakers donating money, vehicles and supplies to Oklahoma tornado relief effort

Judging by the destruction the Oklahoma City area experienced earlier this week, residents are going to need a lot of help in coming months. Fortunately, a number of automakers - including General Motors, Ford, Chrysler, Volkswagen, Honda and Toyota - have stepped up to donate money, supplies and vehicles to aid in the recovery and rebuilding processes.
Here's a quick rundown of which automakers have pitched in and what each contributed so far:
Ford Motor Company has donating $250,000 and a Transit Connect to the American Red Cross, and it will match all other donations made to the Red Cross (up to $250,000) using a special URL tied to the latter's website (link here). Additionally, its local Oklahoma dealers have thrown in an extra $150,000 for the United Way and the automaker will be offering an extra $500 toward the purchase of a new Ford vehicle.

2016 Toyota Tacoma shows its face ahead of Detroit debut

Here's your first full look at the 2016 Toyota Tacoma ahead of its debut at next week's Detroit Auto Show. No details have been released just yet, but at first blush, the revised Taco looks to be a much-needed step forward for the Japanese midsize pickup. We like the chiseled, modern face of the new Tacoma – it's pretty clean, not to mention rugged and handsome. The body sides almost look carried over from the current pickup (they very well could be), and around back, there's a new tailgate with badging stamped into the sheetmetal, as well as some fresh new taillamps. We can't yet see inside the Tacoma's cabin, though we expect it to have been thoroughly refreshed, as well – that's the place where the current truck really shows its age. As we said, Toyota hasn't released any other details, but the badging on this truck shows a V6 engine lies underhood. A four-cylinder option makes sense, as well – especially if the Tacoma wants to adequately compete with the recently launched (and well-liked) Chevrolet Colorado and GMC Canyon twins. We'll know soon if this Tacoma is a fully baked, all-new model, or if its just a thorough refresh on an existing (and old) truck. Stay tuned. Featured Gallery 2016 Toyota Tacoma Limited View 13 Photos Detroit Auto Show Toyota Truck 2015 Detroit Auto Show