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Mazda Kai concept hints at a more muscular, refined Mazda3

Mazda is packing some serious punch for the Tokyo Motor Show, unveiling a stylish hatchback it's calling the Kai Concept to go along with the earlier reveal of the show-stopping Vision Coupe. The compact five-door concept heralds a new generation of cars for the Japanese automaker, which is best known for making sporty, smallish and well-designed vehicles — such as the Mazda3, from which this concept derives its design direction. This version smooths over most of the Mazda3's sharp body creases in favor of smooth, undulating body panels that dramatically reflect light and reflect Mazda's KODO design language. It also gets more narrow, aggressive-looking headlights and a unique overhead profile, with two panes of glass that continue from the windshield and are intersected by a solid-color center, like a U-shaped moonroof. The Kai is powered by a next-generation Skyactiv-X combustion engine, which uses Mazda's proprietary compression ignition system to give the gas-powered engine the fuel efficiency, torque and initial acceleration response of a diesel powertrain. Which is encouraging, considering the Mazda3 already delivers impressive fuel economy. Inside, the concept hints at more refinement, with streamlined chrome accents popping from the black dash and interior panels. It all rests on Mazda's Skyactiv Vehicle Architecture that reflects human-centered design philosophy in everything from redesigned seats to maintain the spine's natural "S" curvature, to NVH tweaks to encourage a quieter, more comfortable ride. Mazda has said it plans to put this concept into production, but there's no word yet on when exactly that will be.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.

First 2014 Mazda3 ad appears

If we judge by your comments on our recent announcement post about the new Mazad3, you Autoblog readers approve, pretty wholeheartedly, about the redesign efforts happening over at Mazda. Pressed for an opinion, we'd be forced to admit that we find the new 3 quite fetching our own selves.
To add fuel to the fast-burning fire then, Mazda has gone ahead and dropped a 15-second pseudo commercial on YouTube, showing a very rendered Mazda3 in a very rendered driving environment. The short spot is really just slightly more dynamic than the images of the car, but there is a spot of mystery to it, as well.
Right at the start of the video, an interior shot of the car shows a transparent display screen of some kind, rising from the top of the 3's dash. An interesting choice, considering Mazda has bestowed an actual center-mounted display in on the hatchback's dash-top - albeit one that doesn't look like a clear piece of glass. Take a look below, and while you're there, check out a just-released official video of the Mazda3's reveal in New York.