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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.

2015 Nissan Pulsar and Pulsar Nismo Concept show Jekyll and Hyde for the hatch

Nissan is showing two very different sides of its new Pulsar five-door hatchback (on the right) at the 2014 Paris Motor Show. On one hand you get to see the standard version hoping to take the fight to popular European models like the Volkswagen Golf and Ford Focus, but also on the stage is our first glimpse at the Pulsar Nismo Concept (above) that demonstrates the vehicle's more devilish side.
The standard Pulsar is hoping to make a dent in the Euro C-segment ranks. It rides on the same platform as the Nissan Qashqai crossover and is actually about 2.4-inches longer than the Golf. Power comes from a trio of choices. There are 1.2-liter and 1.6-liter turbocharged gasoline engines with 113 horsepower and 187 hp, respectively, and a 1.5-liter diesel with 108 hp. CVTs are offered with them all. The Pulsar is also available with a variety of safety tech, including forward emergency braking, lane departure warning and blind spot monitoring.
However, the real excitement comes from the new Nismo Concept. Nissan is clear that it's "only a design study at this stage," but the sporty hatch imagines a flagship for the Pulsar range. It gets the full suite of Nismo goodies with a suspension dropped to the floor and sharper steering. The exterior also benefits from big air intakes in the front bumper, a rear diffuser with central exhausts, flared fenders and carbon fiber trim pieces. The whole thing is finished in satin gray with the division's traditional red trim. The interior has the same motif with race seats and a three-spoke steering wheel.

Hyundai plots a Nissan Juke fighter

A few years ago, Hyundai Motor America CEO Dave Zuchowski suggested interest in taking on the Nissan Juke with a subcompact crossover. It looks like that project is coming together, as we caught Hyundai testing a small, curiously-styled SUV in Germany recently. The SUV is expected to share a lot of the same chassis components as the i20, a hatchback that's sold in other parts of the world, with the same engine lineup as the new i30, another hatchback that Hyundai doesn't sell in the America. In the United Kingdom, the i30 is available with engines including a 1.4-liter gasoline and a 1.6-liter diesel unit. Front-wheel drive would be standard with all-wheel drive an option. The heavily-camouflaged prototype doesn't give away a lot of the SUV's design. The front of the vehicle is hidden away, but what we can see the grille features hexagonal shapes instead of the horizontal bars that we've become accustomed to seeing in Hyundais. The headlights mimic the Jeep Cherokee's design with thin slits on top and larger, round units toward the bottom. At the back, camouflage hides the majority of the prototype, but the taillights appear to be different than the rest of Hyundai's offerings. The outline of the taillights resembles the same units found on the Intrado Concept, indicating the vehicle will get some design cues from the hydrogen-powered prototype. A single exhaust outlet protrudes underneath the rear end. The overall profile of the SUV appears to be smaller than the Tucson, which is currently Hyundai's smallest crossover in the US. Related Video: Featured Gallery Hyundai SUV Spy Shots View 10 Photos Image Credit: CarPix Design/Style Spy Photos Hyundai Nissan Crossover SUV Future Vehicles