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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.

ROEV lets you use multiple charging networks with one account

It may be a textbook case of a first-world problem, but any EV driver who doesn't want to carry two or three plug-in vehicle charging station cards when one would do is about to get a little smile on their face. This morning at the LA Auto Show, the new ROEV Association was announced that will let EV drivers carry just the one card. While you would think the all-caps ROEV stands for something, none of the pre-announcement materials nor the website explain it that way. Instead, it seems to just be a play on rove, which makes a lot of sense. There are three charging networks involved in ROEV: Blink, ChargePoint, and EVgo. Conveniently, these are the three largest in the US and have a combined 17,500 public chargers across the country. If you've got an account with one of these three networks, once ROEV goes into effect (expected in the spring of 2016), you'll be able to use that card at any participating charger without signing up for another account. Your personal details are kept private, ROEV says, and the companies coordinate behind the scenes to make it work. Pricing details were not disclosed. Besides the three main charging networks, two automakers are also founding members of ROEV: BMW and Nissan. ROEV says that Audi and Honda have also have already joined the Association and the organization wants to pull in all EV stakeholders to make electric vehicle charging easy. Fans of EV technology will note that ROEV has nothing to do with promoting either the CHAdeMO or the SAE Combo (CCS) fast charging standard. The Leaf is a CHAdeMO car while the i3 uses CCS, for example. The charging networks, of course, provide both kinds of plugs and don't promote one over the other. Tesla and its Supercharger network are not involved in ROEV, but Tesla drivers can, of course, participate in ROEV.

Nissan GT-R goes on Rockies Alberta adventure with Epic Drives

Years after its original debut, the Nissan GT-R remains a much-feared, well-regarded entry in the sports car landscape. Sure, many of its original competitors are onto new generations these days, but Nissan has continually improved the GT-R, giving it meaningful tweaks almost every year since it came to the US market for 2009. Reviewers also just seem to keep finding things to praise about the all-wheel drive, turbocharged coupe. In this episode of Epic Drives, the GT-R proves that in addition to being a quite pleasant road trip companion around the province of Alberta, Canada, in a pinch it can go off-road to herd some horses, too.
At its heart, Epic Drives amounts to half travelogue and half driving review. So in between snaking the GT-R through some picturesque roads, host Arthur St. Antoine takes a tour of Alberta and the Canadian Rockies. If you're in the mood to take a drive in the Nissan through a landscape that blends the looks of a prairie, the Alps and fjords, then have a seat and check this video out.