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Nissan Leaf Nismo RC Concept [w/video]

Nissan took the wraps off its Leaf Nismo RC Concept at the New York Auto Show more than two years ago. As inferred, the vehicle shares many of its pure-EV components with the production Leaf currently sitting in your dealer's showroom. But don't assume the concept is a placid, family friendly, four-place, front-wheel-drive plug-in for grabbing groceries - the RC (as in "Racing Challenge") is a purpose-built, two-seat, rear-wheel-drive prototype race car tuned for the short track.
The RC Concept is fitted with an 80-kW AC synchronous motor driving the rear wheels and drawing power from a 48-module lithium-ion battery. While the motor and battery are nearly identical to the consumer-friendly Leaf, a sleek full carbon-fiber monocoque body shell and a slew of other enhancements mean the RC is 40-percent lighter, a foot shorter in overall height and nearly seven inches wider than its commuter namesake. Nissan says the RC Concept will hit 62 miles per hour in about 6.8 seconds, top out at 93 mph and run for about 20 minutes under race conditions (it will accept an 80-percent charge in 30 minutes with a quick-charger). Understandably, if a zero-emissions motorsport series comes to fruition, the races would be short and nearly silent.
We caught up with the Leaf Nismo RC concept in Southern California, where we were offered the opportunity to zip it around a tight autocross at the former Marine Corps Air Station, El Toro.

DC fast charging not as damaging to EV batteries as expected

As convenient as DC fast charging is, there have been lots of warnings that repeated dumping of so many electrons into an electric vehicle's battery pack in such a short time would reduce the battery's life. While everyone agrees that DC fast charging does have some effect on battery life, it may not be as bad as previously expected. Over on SimanaitisSays, Dennis Simanaitis, writes about a recent presentation by Matt Shirk of the Idaho National Laboratory (INL) called DC Fast, Wireless, And Conductive Charging Evaluation Projects (PDF) that describes an ongoing test of four 2012 Nissan Leaf EVs that are being charged in two pairs of two. One pair only recharges from 50-kW DC fast chargers, which the other two sip from 3.3-kW Level 2 chargers exclusively. Otherwise, the cars are operated pretty much the same: climate is automatically set to 72 degrees, are driven on public roads around Phoenix, AZ and have the same set of dedicated drivers is rotated through the four cars. "Degradation depends more on the miles traveled than on the nature of recharging." What's most interesting are the charts on page seven of Shirk's presentation (click the image above to enlarge), which show the energy capacity of each of the four vehicles. When they were new, the four batteries were each tested to measure their energy capacity and given a 0 capacity loss baseline. They were then tested at 10,000, 20,000, 30,000 and 40,000 miles, and at each point, the DC-only EVs had roughly the same amount of battery loss as the Level 2 test subjects. The DC cars did lose a bit more at each test, but only around a 25-percent overall loss after 40k, compared to 23 percent for the Level 2 cars. Simanaitis' takeaway is that, "INL data suggest that the amount of degradation depends more on the miles traveled than on the nature of recharging." The tests are part of the INLs' Advanced Vehicle Testing Activity work and a final report is forthcoming. These initial numbers from IPL do mesh with other research into DC fast charging, though. Mitsubishi said daily fast charging wouldn't really hurt the battery in the i-MiEV and MIT tests of a Fisker Karma battery showed just 10-percent loss over 1,500 rapid charge-discharge cycles.

Mercedes, Renault-Nissan to work together on truck project

Just a few weeks ago, Mercedes-Benz barged into the automotive world with news of a pickup as a mysterious but enticing future model from the German brand. Rumors of a possible collaboration with Nissan followed, but Renault-Nissan Alliance CEO Carlos Ghosn refused to give any clear details. That speculation is now over, because the automakers made their truck partnership official. This new information reveals that the Mercedes truck won't be a full in-house creation from Daimler. For example, the pickup will share some of its underpinnings with the latest Nissan NP300 Navara. The German company's engineers, however, will work to change the design to their liking. Also, as in the rendering, Mercedes will use a double-cab body for the model. "Thanks to our well-established partnership with the Renault-Nissan Alliance, we are able to drastically reduce the time and cost to enter this key segment." Daimler Chairman Dr. Dieter Zetsche said in the company's release. Nissan will play a further major role in the project by helping Renault develop a pickup based on the Navara as well. By 2020, all three trucks will be built together in Cordoba, Argentina, for Latin American markets and in Barcelona, Spain, for other parts of the world. Mercedes will target both regular customers and commercial buyers with its truck. While still not officially slated for North America, there's a chance that the Mercedes truck might be sold here. The US arm of the company reportedly has until the end of the year to decide to offer it with some added luxury-oriented upgrades compared to the rest of the world. Daimler & Renault-Nissan Alliance expand cooperation to 1-ton pickup trucks April 07, 2015 Daimler & Renault-Nissan Alliance expand cooperation to 1-ton pickup trucks Nissan and Daimler to jointly develop midsize pickup truck Mercedes-Benz pickup to share some of the architecture with the all-new Nissan NP300 Mercedes-Benz vehicle to be engineered and designed by Daimler to meet specific needs of its customers Mercedes-Benz pickup will target Europe, Australia, South Africa and Latin America Pickup trucks to be built in Barcelona, Spain, and Cordoba, Argentina Latest milestone in the five-year strategic cooperation between Daimler and the Renault-Nissan Alliance STUTTGART/PARIS/YOKOHAMA –The Renault-Nissan Alliance and Daimler AG will expand their five-year strategic cooperation into the pickup truck segment.