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German investigators search VW headquarters, take documents

German investigators are no longer pursuing an official investigation against former Volkswagen CEO Martin Winterkorn, but prosecutors aren't giving up their detective work into the automaker's actions surrounding its diesel emissions scandal. In their latest move, authorities have searched VW's headquarters in Wolfsburg and confiscated documents and other data to learn more about how a software-based "defeat device" made it into the real world, according to Reuters. VW described the amount of material that it handed over as "comprehensive." The automaker is also conducting its own, internal investigation, but the company isn't releasing those results, yet. It has allegedly responded by suspending over 10 employees, including three top engineers. There has been reportedly no actual evidence found against this trio of men. In addition to the work of German prosecutors, many US investigators are looking into VW's actions, as well. The West Virginia Attorney General is suing the company for fraud, and there are pending class-action lawsuits. In written testimony for a Congressional hearing, Michael Horn, President and CEO of VW Group of America, said he first learned of the emissions noncompliance when the West Virginia University study was published in the spring of 2014. A recall on the affected Volkswagens isn't expected to begin until at least January, according to CEO Matthias Muller, and it could be later for some models. The costs to fix them all and deal with potential fines means that VW must delay some projects to save money. Put another way, VW will be dealing with the repercussions of this scandal for years. Related Video:

VW decides against active-cooling system for e-Golf lithium battery

When the 2015 VW e-Golf was introduced at the LA Auto Show last year, VW said it would come with a water-cooled battery. During the Detroit Auto Show, when the car was trotted out again, VW released a new press release that stripped out the "water-cooled" language, but this change went unnoticed. During a recent VW event in Germany, a friend from Green Car Reports realized that the battery on display did not seem to have any water-cooling mechanisms. That set us off on a bit of a sleuthing and we have now learned that VW is not going to include any active cooling in the upcoming e-Golf. In fact, the company is entirely confident that this car - because of what it's designed to do - doesn't need it. "The need for a cooling system wasn't there" - VW's Darryll Harrison VW has been working on an electrified Golf for ages now, and so changes to the plan are to be expected. But battery cooling is vitally important not just to keep the car operating properly but because when things get too hot, there can be serious public relations problems. Nissan began testing a new battery chemistry for the Leaf in 2013 after an uproar from warm-weather EV drivers in Arizona who were experiencing worse-than-expected battery performance. The Leaf has always used an air-cooled battery, which is another way to say that there is no active cooling system (more details here). Tesla CEO Elon Musk once said this approach is "primitive." So, why is VW following the same path? We asked Darryll Harrison, VW US's manager of brand public relations west, for more information, and he told AutoblogGreen that VW engineers discovered through a lot of testing of the Golf Mk6 EV prototypes, that battery performance was not impacted by temperatures when using the right battery chemistry. That chemistry, it turns out, is lithium nickel manganese cobalt oxide (NMC) in cells from Panasonic. These cells had "the lowest self-warming tendency and the lowest memory effect of all cells tested," Harrison said. He added that VW engineers tested the NMC cells in places like Death Valley and Arizona and found they didn't warm very quickly either through operation, charging (including during fast charging) or through high ambient temps. "The need for a cooling system wasn't there," Harrison said.

Piech is back (kinda) at VW

Before the company was rocked by the diesel emissions scandal, you would've thought that the ouster of Ferdinand Piech as chairman of the Volkswagen Supervisory Board in April was the biggest corporate news from the automaker all year. After all, the longtime exec was a towering figure in the German auto industry. He wasn't gone for long, though. In a fascinating article, The Wall Street Journal breaks down how Piech is now wielding influence within the giant corporation yet again. Piech's continued sway has come in part because two people close to him have started running the company. His resignation reportedly came because Piech was supporting Matthias Muller as next group CEO, rather than Martin Winterkorn. Now, Muller has achieved exactly that role. In addition, Hans Dieter Potsch has taken over as supervisory board chairman. He's also the chief financial officer at Porsche SE, the family holding company that controls a vast swath of VW stock. "The Porsche-Piech family will exert more influence over the company in the future," an anonymous person close to the board said to The Wall Street Journal. Piech appears fully aware of his changing fortunes within the company, too. According to the WSJ, he and his wife Ursula arrived at the VW factory's main gates in a red Bentley the day after WInterkorn's resignation. If you find all of these corporate machinations fascinating, then the piece is well worth a read.