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Investigators Find No Defect Trend With Tesla Motors' Model S

Federal safety investigators said Friday they have found no apparent defect trends in the Tesla Model S, an electric luxury car that has its share of fans and critics. The National Highway Traffic Safety Administration closed a four-month investigation into whether the car's batteries were at heightened risk for underbody strikes and subsequent fires. Even though no defect trend was found, Tesla Motors said in a written statement it would further protect the bottom of its cars with a reinforced underbody shield. The California-based automaker started adding the shields on March 6 and will retrofit older models free of charge. It will also increase the ground clearance of new cars. "This fix should eliminate the potential of a battery-pack fire under all but the most extreme circumstances," said Karl Brauer, a senior analyst at Kelley Blue Book. Although there are more than 194,000 car fires in the United States every year, NHTSA investigators began a preliminary investigation into potential trouble on Nov. 15, 2013 following two Model S fires, one in Tennessee and one in Washington. No one was injured or killed in either fire. Roadway debris punctured the battery pack near the front of the compartments in both cases, damaging the batteries' lithium ion cells that then began "thermal runaway" events. The opposite ends of the debris had dug into the pavement and jutted upward. Tesla called this a "piking effect." The company said it has conducted 152 vehicle level tests, and that the new shields prevented any damage or penetration of the new shields. The first is a rounded, hollow aluminum bar that's followed by a titanium plate. The third layer of protection is made of solid aluminum. (There's video of the new plates in action on the Tesla Motors website). "We have tried every worst-case debris impact we can think of, including hardened steel structures set in the ideal position for a piking event," Tesla Motors founder Elon Musk wrote on the company's blog," essentially equivalent to driving a car at highway speed, into a steel spear braced on the tarmac." Approximately 15,805 vehicles are eligible for the upgrades, which NHTSA says should reduce the frequency of underbody strikes and subsequent fire risks. But the agency did note that the closing of the investigation did not necessarily constitute a finding that a defect does not exist. "The agency reserves the right to take further action if warranted by new circumstances," it said.

Weekly Recap: Ferrari plans to gradually increase production by 2019

Ferrari has long been known for the exclusivity of its performance machines. It's on a different level than Porsche, BMW, and Mercedes. But as it transitions to a new era of independence from Fiat Chrysler, Ferrari is going to get a little less exclusive. It's by design, and it means a subtle, slow ramp-up of production – a move Ferrari believes will ensure its future by meeting growing demand in new markets. The strategy was detailed in SEC documents filed this month as part of the company's pending stock offering. The files reveal Ferrari will gradually increase shipments to about 9,000 units per year by 2019. This is a reversal of Ferrari's 2013 plans to cap production at 7,000 cars annually, which it hit on the nose that year. Ferrari shipments inched up to 7,255 in 2014, though that's down from 2012's record tally of 7,405. Ferrari is a vastly different operation than it was in 2013. Longtime chairman Luca di Montezemolo stepped down last fall, and FCA chief executive Sergio Marchionne has been overseeing the company since then. Its IPO has attracted high levels of attention from enthusiasts and investors. As expected, demand has reportedly outstripped the availability of the stock, which has an estimated offering price of $48 to $52 a share. Speaking of more Ferraris, the company revealed a limited-edition model this week called the F12tdf (shown above). Based on the F12 Berlinetta, the car is a salute to the Tour de France endurance auto race that Ferrari dominated in the 1950s and '60s. The V12 engine's output increases to 769 horsepower, while weight is cut by 243 pounds – allowing for a sprint to 60 mph in 2.9 seconds. Dramatic carbon-fiber elements and a radical redesign of the body panels give the F12 a more dramatic look. It will be limited to 799 units over the life of the car. If this is how Ferrari is increasing production, we're more than okay with the company's new strategy. OTHER NEWS & NOTES Tesla software unlocks Autopilot features Tesla released the latest version of its software for the Model S this week, which allows the all-electric sedan to drive in a semi-autonomous state called Autopilot. Tesla Version 7.0 enables the Model S to maintain lane position, change lanes by touching the turn signal, and manage the car's speed using an advanced, traffic-sensing cruise control. It also has a parallel parking feature, which searches for open spots and then parks your Tesla.

Recharge Wrap-up: Tesla battery drain reported; ELF two-seater solar trike

Biofuel company KiOR has filed for bankruptcy. KiOR, which was born out of a partnership between Khosla Ventures and Dutch biofuel startup BIOeCON, has debts numbering $261.31 million, with just $58.27 million in assets. The company produced biocrude from cellulosic biomass, but was unable to meet its production targets at its facility in Columbus, MS, and was also facing quality problems and accused mismanagement. KiOR shuttered its biocrude plant earlier this year, and suffered a huge loss in stock value. Read more at Gigaom. Some Tesla Model S owners are complaining again of "vampire" drain during sleep mode. Since downloading the Firmware 6.0, some drivers have reported a battery draw, even when set to "sleep always." Losses can be up to 12 miles of range from sitting overnight, and the latest versions of 6.0 haven't seemed to have solved the problem. Interestingly, the problem isn't affecting all Model S owners. Also, battery draw problems have been reported in the past, which Tesla took steps to fix in previous firmware updates. Read more at Inside EVs. Daimler's Car2go carsharing service is expected to reach 1 million users by the end of the year. The company currently reports 900,000 users worldwide. Car2go operates in 29 cities in North America and Europe, with plans to expand operations to China. "China might be risky, but it also brings lots of opportunities," says Daimler's Rainer Becker. While Car2go has yet to make a profit as a whole, it is moving in that direction, with Becker saying some cities' operations are already profitable. Read more at Automotive News Europe. The ELF solar- and human-powered trike from Organic Transit is now available as a two-seater. The ELF 2FR, as it is called, is a package that adds a rear seat behind the driver of the pod-shaped EV to allow for eco-friendly transport of two adults. The standard ELF retails for $5,495, and the upgrade to the 2FR adds another $499 to the price, which seems like a small premium for doubling the occupancy. Organic Transit hasn't released all the details on its website for the 2FR yet, but the standard ELF charges via outlet or 100-watt solar panel, goes 20 miles per hour and gets the equivalent of 1,800 miles per gallon (though adding the weight of another adult will certainly change those mileage numbers). Check out the Organic Transit's ELF 2FR in the videos below and read more at Treehugger. VIA Motors has received EPA certification for its range-extended electric van.