1988 Mazda Rx-7 Turbo on 2040-cars

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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.

Britain's BBR already promising 2016 Mazda MX-5 Miata with 200+ horsepower

The 2016 Mazda MX-5 Miata is one of Autoblog's most anticipated cars to drive this year, and with good reason. Thanks to svelte, angular styling, the promise of less weight, the possibility of more power and all at a fairly affordable price, it represents pure, automotive enjoyment. Mazda is still not saying exactly how much power the new Miata's 2.0-liter Skyactiv four-cylinder engine will make, but that isn't keeping British tuner BBR from already working out how to squeeze even more ponies from the mill – potentially as much as 200 horsepower with natural aspiration. The company bought a Mazda3 for access to its 2.0-liter Skyactiv and went to work on it. "Our objective with the all-new MX-5 is to achieve the same 200 bhp output that we can easily enjoy with simple bolt-on components on the current 2.0-litre NC model, before building on further power upgrades using forced induction," said Neil McKay of BBR in the company's release. The 3's version of the engine is rated at 155 hp and 150 pound-feet of torque but is expected to be tuned for additional grunt for the droptop. Still, it gives BBR something to experiment with before the real thing is available. The tuner also got the opportunity to take a look at a pre-production 2016 Miata and is already developing "subtle bodywork alterations" for the upcoming convertible. You can get a taste for the company's plans with the rendering above. It sports tinted lights, a front lip spoiler, lower side sills and a tiny rear spoiler. Scroll down to read more about BBR's plans in the official announcement. BBR UNVEILS STUNNING 200 BHP ALL-NEW MAZDA MX-5 CONCEPT Despite deliveries not scheduled to begin until July, legendary Mazda performance tuner BBR is making great progress with both its visual concept and powertrain development for the all-new MX-5. "A program of detailed performance enhancements has already commenced at our Brackley base," says BBR's Neil Mckay, "thanks to our investment in a 2.0-litre Skyactiv powered Mazda 3. Our objective with the all-new MX-5 is to achieve the same 200 bhp output that we can easily enjoy with simple bolt-on components on the current 2.0-litre NC model, before building on further power upgrades using forced induction." Having viewed a pre-production version of the car BBR is also working hard on visual enhancements to add more presence to the svelte lines of the all-new MX-5.

Why we can't have better headlights here in the U.S.

It wouldn't be a European auto show if we weren't teased with at least one mainstream vehicle we can't have here. At the Geneva Motor Show last week, the small but vocal contingent of shooting-brake buffs lamented that the Mazda6 wagon won't be coming to our shores, although they can take comfort in the fact that the vehicle won't get the torquey 250-horsepower 2.5-liter turbocharged gasoline engine we'll get here. Mercedes-Benz also announced a new headlight technology in Geneva that likely won't be available here anytime soon. It's just the latest in a long line of innovative and potentially lifesaving front-lighting solutions that the federal government doesn't allow in this country due to outdated standards — and a current lack of leadership at the U.S. Department of Transportation. Mercedes-Benz's new Digital Light system that debuted in Geneva uses a computer chip to activate more than a million micro-reflectors to better illuminate the road ahead. The Digital Light headlamps works with the vehicle's cameras, sensors and navigation mapping to adjust lighting for the given location and situation and to detect other road users. The Digital Light technology also serves as an extended head-up display of sorts by projecting symbols on the pavement ahead to alert drivers to, say, slippery conditions or pedestrians in the road. And it can even project lines on the road in a construction zone or through tight curves to show the driver the correct path. Digital Light will be available on Mercedes-Maybach vehicles later this year, although like any technology it's bound to trickle down to less expensive vehicles. That is, if we ever get it here in the U.S. Audi, a leader in automotive lighting, has repeatedly run into snags trying to bring state-of-the-art car headlights to the U.S. The German luxury automaker's recently introduced matrix laser headlight system, which performs many of the same trick as Mercedes-Benz's Digital Light, also isn't legal on U.S. roads. And five years after the introduction of its matrix-beam LED lighting, which illuminates more of the road without blinding oncoming motorists with brights by simultaneously operating high and low beams, Audi still can't bring that technology to the U.S. either.