2007 Mazda Mx-5 Miata Mx-5 Convertible on 2040-cars

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50 engineers kept the rotary alive at Mazda for 8 years

The Mazda RX-Vision concept is one of the standouts at this year's Tokyo Motor Show thanks to a drop-dead gorgeous design and a revival of the Wankel engine. The fact that the rotary is still in development at Mazda is thanks to a dedicated group of 50 engineers. According to Automotive News, their dream for the last eight years has been to bring this storied engine design back to the street. It won't be easy. Because of its design, the rotary suffers from poor fuel economy and high emissions. Making the challenge even harder, Mazda reportedly only gives them a small budget, but they continue to chip away at the problem. "These 50 engineers want to develop the rotary engine, therefore they joined Mazda," company research and development boss Kiyoshi Fujiwara told AN. "If I stop the rotary engine, probably they want to leave." For the Skyactiv-R under the RX-Vision's svelte hood, the team reportedly started from the 16X rotary project. Dating back to 2007, that 1.6-liter engine was supposed to improve torque and fuel economy thanks in part to direct injection. After additional development, insiders even suggested that the engineers might have finally solved the powerplant's issues. However, Mazda never put the mill into production, and the RX-8 remains the company's last Wankel-powered model to be offered in showrooms. "We have a dream that one day, this design with a rotary engine will achieve a level that customers will accept," CEO Masamichi Kogai said to AN. Mazda is quite clear that the RX-Vision might never go on sale without a suitable rotary. Although if it does see production, the coupe would likely use a stiffened version of the Miata's chassis, AN reports. Before anyone can place an order, these 50 determined engineers still have a lot of work ahead of them. Related Video:

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.

Jeremy Clarkson chooses his top 10 cars for 2015 and 2016

Jeremy Clarkson is well-known for his role as co-host on the old Top Gear. But the frontman of the upcoming Amazon Prime Show, The Grand Tour, also has a standing column for The Sunday Times in the UK where he reviews the latest cars. With fall nearing, Clarkson put out a list of his top-10 cars from this year and 2015. Some on the list will surprise you, while others represent everything we've come to love about Clarkson. In order to make his list of star cars, the vehicles must offer what co-host James May calls "the fizz." The vehicles, Clarkson claims, have something that is out of the ordinary. Whether it's the car's looks, the way it gets up to speed, or its high-tech gadgets, Clarkson's top-10 list is made up of items that are more than just tools for getting from point A to B. So which ones made the list? Head over to the column in The Sunday Times. Mazda MX-5 Miata 2.0 Sport Recaro Alfa Romeo 4C Coupe Mercedes-AMG GT S Ford Focus RS Ford Mustang Fastback 5.0 V8 GT Volvo XC90 D5 AWD Vauxhall Zafira Tourer 1.6 CDTi Tech Line BMW M2 Ferrari 488 GTB Lamborghini Aventador Related Video: Featured Gallery Jeremy Clarkson's Star Cars For 2015 and 2016 View 11 Photos News Source: The Sunday TimesImage Credit: STEFAN HEUNIS / AFP / Getty Images Celebrities BMW Ferrari Ford Lamborghini Mazda Performance bmw m2 ferrari 488 gtb