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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.

'Ringbanana' Miata is improbable 9-minute Nurburgring car

The combination of being inexpensive, capable, reliable, and friendly to all skill levels makes the Mazda Miata one of the world's most popular platforms for motorsports, but the roadsters aren't exactly rocketships. What would it take to lap a ratty, first-gen example around the Nurburgring Nordschleife in less than nine minutes? We're not exactly sure, but the Ringbanana team intends to discover the answer. The project is the type of thing that gets dreamed up after a few too many pilsners: buy the cheapest running Miata available and put as little money necessary into the roadster to make it capable around the 'Ring. As the Best-Motoring-inspired intro explains, the Mazda is largely stock other than some Fulda performance tires, possibly aftermarket springs, and a stripped interior. The video above shows the baseline test, and the convertible manages a 9:21.8 circuit, which doesn't seem too bad as a start. The video below goes into far more detail about the project's genesis and its goal. Plus, the two hosts are quite entertaining when replying to the comments from the original clip. We wish them the best of luck and look forward to following along on Facebook to see what it takes to get the Ringbanana below nine minutes. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

2016 Mazda MX-5 Miata Launch Edition now available for pre-order

Want to be one of the first to buy the fantastic new 2016 Mazda MX-5 Miata? Now's your chance. The pre-order books open at 12:00 PM Eastern for the very special Launch Edition, which is limited to just 1,000 units. All of the MX-5 Miata Launch Edition cars come painted in Soul Red with a Sport Tan leather interior, an exclusive combination for this special run. Buyers only need to choose between the six-speed manual transmission (the obvious choice), or a six-speed automatic. Pricing is set at $30,495 if you want the stick-shift, and $31,570 if you prefer the auto. So, want one? Of course you do. Head over to Mazda's pre-order site and place a $500 deposit toward the purchase of your car. Better act fast, though. When Mazda offered its 25th Anniversary MX-5 Miata via pre-order, all 100 of those cars sold out in just ten minutes.