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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.

Toyota teaches weather reporters not to get their forecasts wrong

In some ways, being a weather forecaster on television is one of the easiest jobs on the world. In few other professions can you get your duty utterly wrong for the day and for that to be completely acceptable. Toyota is taking TV meteorologists to task in a new ad in Europe for the Aygo X-Wave with its sliding canvas top. The gimmick here is that the forecasters have to drive an Aygo for a month with a top that's synced to their predictions. For example, if they report sunny weather, then the top opens automatically regardless of whether rain is pouring down. Even if the results are staged, it still provides for a great dose of humor to market the hatchback's massive opening roof.

New Toyota 86 and Subaru BRZ could move to a Toyota platform

There's more rumormill news about the future of the Toyota 86 and its twin, the Subaru BRZ. Australian website CarSales reports that the next versions of the coupe twins may switch from the existing and heavily modified Impreza platform to Toyota's TNGA platform. The reason? An unnamed Subaru insider tells the site the next-generation versions of the cars will retain their rear-wheel-drive configuration and thus won't move to the new Subaru Global Platform, upon which the automaker is basing all its new all-wheel-drive vehicles. That leaves two options: staying with the current Subaru platform, or moving to the Toyota New Global Architecture, which underpins vehicles including the Prius, C-HR, Camry and Highlander, and can better accommodate real-wheel-drive layouts. The TNGA would also help save weight and provide economies of scale. "It's a very flexible platform, but we make all-wheel-drive vehicles," the insider told CarSales about the new Subaru platform. "That's our forte, all-wheel drive." The 86 and BRZ launched for 2012, the former as the Scion FR-S, sharing the Impreza platform, Subaru's 205-horsepower 2.0-liter four-cylinder boxer engine and a six-speed manual or automatic transmission. Both brands have confirmed they are working on new vehicles but have declined to offer details, and the source tells CarSales that development at Subaru is well under way. Toyota just revealed its heavily anticipated (and much-dissected) Supra in Detroit in January, based heavily on BMW engineering. The automaker is reportedly keen to build a family of sports cars, with a possible third model under consideration, and is developing the new 86 with plenty of involvement from the Toyota Gazoo Racing division.