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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.

Seeing the Detroit Auto Show via drone

Seeing the Chevrolet display at the Detroit Auto Show is worth doing this year, and not just because of the new Corvette Z06, Volt and Bolt concept. In order to attract the new kids, The Bowtie has gone what the old kids used to call "buck wild" with their show stand at Cobo Hall. A Corvette Z06, Trax, and Colorado are parked along a central aisle, called Mainstreet, at the end of which is a 20-foot-tall, 73-foot long transparent screen lording over the new Volt. Elsewhere are five more 20-foot-tall screens broadcasting nine stories today's Chevrolet wants to tell about its vehicles, from performance to belief in the power of play to its 4G LTE-equipped OnStar telematics service. Then there are the social media and virtual reality safety installations, the community presentations and more. Chevrolet flew a drone through the stand to show off what it's doing, which is has replaced eye-level video as the next best thing to being there. You can check it out in the video above.

Porsche, Jaguar continue dominance in 2015 JD Power APEAL study

The top of JD Power's 2015 APEAL Study has not changed much in the last year. Porsche remains No. 1 with Jaguar nipping at its heels, although both premium brands saw their overall score fall compared to 2014. For those that need a refresher, the APEAL Study looks at how "gratifying" a vehicle is to own and drive, rating cars and brands on a 1,000-point scale. The industry average for 2015 has increased from 794 to 798, while the total number of automakers that finished above the curve increased from 16 to 20. While Porsche and Jaguar finished at the top, their scores dropped eight and seven points, respectively, to 874 and 855. The top "non-premium" brand was Mini, which scored an impressive 825, up from 795. If the BMW-owned British marque is still a bit too premium for your tastes, last year's non-premium winner, Hyundai, did climb five points and is this year's runner up. At the opposite end of the scale, Smart sits at the very bottom of the rankings, with a score of 683 (it didn't appear on the 2014 rankings). Fiat also dropped, from fourth worst in 2014 to second worst in 2015, despite the 500 being named most appealing city car. Subaru made an impressive climb, from third worst to seventh, falling just 10 points shy of the industry average and two points south of the non-premium average. In the individual vehicle segments, eight brands earned multiple awards, with Ford, Chevrolet, and Porsche earning three apiece. Surprise segment victories included the new Ford Expedition, which beat out Chevy's popular Suburban. The Infiniti QX80 bested the likes of the Cadillac Escalade and Range Rover for best large luxury SUV, and the Dodge Challenger beat its muscle car rivals from Ford and Chevy. Most of the victories, though, were quite predictable. The Mazda6 and CX-5 took wins for the midsize sedan and compact SUV categories respectively, while the Volkswagen Golf captured the compact car win. The Ford F-150 won the large pickup category, while the Porsche Cayman was named most appealing compact premium sporty car. Check out the official release on the 2015 APEAL Study, available below, from JD Power. 2015 U.S. APEAL Study Results The latest safety-related technologies are among the drivers of customer satisfaction with new vehicles, according to the J.D. Power 2015 U.S.