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Submit your questions for Autoblog Podcast #317 LIVE!

We record Autoblog Podcast #317 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #317
Mitsubishi Mirage

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.

Cosworth teases upgrades for Subaru BRZ

Subaru may or may not produce an STI version of the BRZ. Things seem to go back and forth on the subject. But Subaru Tecnica International isn't the only company with a history of tuning Subies. So does Cosworth, and now the British racing firm appears to be turning its attention to the BRZ and its Toyota- and Scion-badged siblings.
For those unacquainted, Cosworth is more than your average tuning company. It's a racing firm first and foremost, having made F1 engines under its own name as well as Ford's (chief among them the all-conquering DFV 3.0-liter V8 of 1960s and 70s fame), not to mention engines for Indy, rally and even high-performance, road-going versions of the Ford Sierra, Chevy Vega and Mercedes 190E. The list goes on and on, but you get the point.
Now withdrawing from Formula One, Cosworth is focusing its attention on tuning road cars again with the launch of the Cosworth Power Package line, the first of which will focus on the Toyota GT86 (aka Scion FR-S) and Subaru BRZ. We don't know just yet what will be included in the packaged dubbed FA-20, but from the video teaser below, it seems there'll be upgrades to the exhaust, suspension, aero and - if we're lucky - maybe a super- or turbocharger for the 2.0-liter flat-four engine. We'll have to wait and see, but we get the feeling that with Cosworth on the job, it'll be worth the wait. Check out the minute-long video below in the meantime.