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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.

Chevy Corvette gets Valet Mode with Performance Data Recorder [w/video]

For the 2015-model-year, Chevrolet introduces Valet Mode for the Corvette, an enhancement to the Performance Data Recorder (PDR) already available and to your peace of mind. The PDR already captures 720p HD video with a windshield-mounted camera, records interior audio with a cabin microphone and gathers telemetry data using GPS, saving the data to an SD card in the glovebox. You can then watch your track-day antics with various information overlays on the center console screen.
Valet Mode will let you hit 'Replay' when your car gets pulled up front smelling vaguely of fricasseed clutch. Turned on by entering a four-digit code, it also locks the interior storage spaces and turns off the infotainment system. It can't be turned off until the code is re-entered. There's a press release below with more information as well as a video that explains how it works, with the obligatory dig at the 'Vette's biggest foe.

Recharge Wrap-up: Long Beach ePrix, London's new electric buses

London will put 51 new electric buses into service. With the addition of these buses, two more routes (in addition to one already in operation) will be all-electric. Transport for London plans to have all of central London's 300 single-decker buses running on electricity or hydrogen by 2020. "The expansion of London's electric bus fleet demonstrates our commitment to reducing emissions from public transport in London," says Deputy Mayor of London for Environment and Energy, Matthew Pencharz. "The Ultra Low Emission Zone that will be introduced in 2020 is the most ambitious measure of its kind taken to tackle air pollution anywhere in the world, and it will transform our bus fleet into a cleaner, greener and more pleasant way of travelling for Londoners." Read more from Transport for London, and from Green Car Congress. The Chevrolet Volt is subject to a tie-rod recall. Along with 10 Cruze vehicles, one 2015 Volt has been recalled because of a tie rod that might not have been tightened to the steering gear correctly, which could lead to a loss of steering control. Chevrolet will replace the steering gear assembly, supplied by Robert Bosch Automotive Steering, for free. There have been no reported injuries from this issue. Read more at Detroit News. The Formula E Long Beach ePrix will take place on April 2, 2016. For the second season of the electric racing series, Long Beach is the only confirmed US host, as the spot on the calendar previously held by Miami still remains to be determined. More than 20,000 fans attended the inaugural Long Beach ePrix earlier this year, where Nelson Piquet, Jr. took first place before going on to win the Drivers' Championship. "It's extremely exciting to welcome the ePrix back to Long Beach for a second year," says Long Beach Mayor Robert Garcia, "and we are hopeful that this demonstration of innovation, sustainability, and cutting edge technology will return to our city year after year." Read more in the press release below. Related Video: LONG BEACH ePRIX TO RETURN APRIL 2, 2016 (July 14, 2015) – The Long Beach ePrix will return to the city streets on Saturday, April 2, 2016. The FIA (Federation Internationale de l'Automobile) World Motor Sport Council recently approved the calendar for the second season of the FIA Formula E Championship, with Long Beach scheduled as the sixth of 11 rounds in the series. Overall, 10 venues will host Formula E events, with the 2015-16 season beginning once again in Beijing on Oct. 17.