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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.

Recharge Wrap-up: Elon Musk talks autonomous cars, Renault to run ZOE in ZENN Monte-Carlo Rally

Elon Musk discussed the autonomous driving capabilities of the Tesla Model S with NVIDIA CEO Jen-Hsun Huang. He said the car is already equipped with the hardware needed for highway driving. "Even with the current sensor suite, we could make the car go fully autonomous, but not a level of reliability that would be safe in, say, a complex urban environment at 30 miles an hour," says Musk. That would require "a bigger sensor suite, and you need more computing power." Huang and Musk also discussed car hacking and artificial intelligence during the interview at the 2015 GPU Technology Conference. See the video above, and read more at Teslarati. Renault will send four of its ZOE electric cars to the ZENN (Zero Emission, No Noise) Monte-Carlo Rally. The rally, which travels through the principality beginning and ending at the Port of Monaco, is open to electric cars with ranges of less than 250 kilometers (about 155 miles). Visitors can also explore an "electric village," which includes vehicle test drives and information about the future of automobiles. The race takes place from March 20 through 22. Read more in the press release from Renault below. A Seattle-area Nissan dealership has opened a "charging depot" with six fast chargers. Bellevue Nissan now claims to have a larger group of fast chargers than any other dealership in the country. The chargers are part of the NRG eVgo network, and will be available to drivers around the clock every day of the week. They'll also be part of Nissan's "No Charge To Charge" program for Leaf customers. Washington Governor Jay Inslee was on hand at the dealership for the opening, where he called such fast charging stations, "the backbone of our future transportation infrastructure." Read more at Hybrid Cars. A coalition of environmental groups and renewable energy advocates want New York to require all heating oil sold in the state to include at least two percent biodiesel. The proposal passed the Assembly's Committee on Environmental Conservation Tuesday. Its sponsor is Assemblyman Steven Englebright, a Long Island Democrat who says a biodiesel standard would reduce carbon emissions while boosting the state's agricultural industry. Supporters of a biodiesel standard include the New York League of Conservation Voters, the New York Public Interest Research Group and the state's Corn and Soybean Growers Association. Conventional oil companies are opposed.

Recharge Wrap-up: Renault e.dams wins Formula E Marrakesh ePrix, S. Korean Tesla store opens this month

Renault e.dams has won the 2016 Formula E Marrakesh ePrix. The win at the season's second round gives the team a strong lead with 74 points. ABT Schaeffler Audi Sport and Mahindra Racing are tied in second place with 36 points. Renault e.dams driver Sebastien Buemi took first place in the race, with teammate Nico Prost finishing fourth. "We know we have an efficient car and we had to take advantage of that after we started further back on the grid than we wanted," says Buemi. "I was able to extract everything I needed from the car and it shows the team is working really well, so it's been a very positive start to the season." Read more at Green Car Congress, or from Renault. Navigant Research has ranked the EV charging companies. Of the 12 companies providing public charging networks and services, Navigant has named The New Motion, ChargePoint, and EV-Box as "leaders" in the field based on market share, breadth of products, and market adaptability. Following that group of three are a group of "contenders," including Chargemaster, Fortum, Innology SE, Greenlots, Clever A/S, EVgo, POD Point, and SemaConnect. Trailing those is Car Charging Group in the "challengers" category. Read more at Green Car Congress. BMW has entered the second phase of its ChargeForward program to study advanced EV charging. In partnership with Pacific Gas and Electric Company, BMW is inviting i3 and i8 owners in the San Francisco Bay Area to apply to participate in the second phase of the smart charging project, which aims to test technology that optimizes charging for the benefit of the electric grid. "By managing charging when a BMW i or iPerformance vehicle is plugged in – wherever the vehicle is plugged in – BMW can ensure that vehicles are efficiently charged to meet driver's communicated mobility needs while helping the grid reach greater levels of efficiency and sustainability," says BMW's Manager of Connected eMobility, Cliff Fietzek. Read more from BMW. Tesla will open its first Korean retail location this month. On November 29, Tesla plans to open a store in Starfield Hanam, South Korea's largest mall, in Gyeonggi Province. Tesla has also finished ground construction of a Supercharger station in the mall's parking area. Tesla is working to open another store in Seoul's Gangnam District, as well as charging stations around the country. Read more from The Country Caller.