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Recharge Wrap-up: Ferrock a carbon-negative cement substitute, Audi makes e-diesel

A cement alternative uses recycled materials and traps CO2 rather than producing it. Invented by David Stone at the University of Arizona, Ferrock uses recycled steel dust and glass to produce a substance stronger than conventional concrete. Cement has a high carbon footprint from the high heat needed to process the limestone. Ferrock needs no such heat, and it actually uses CO2 to harden, making it, as Stone calls it, a carbon-negative material. Learn more in the video above, see the transcript at PBS NewsHour and read more at Green Car Reports. Teslarati offers a detailed rundown of Tesla's new Valet Mode feature for the Model S. Part of the Firmware 6.2 update, Valet Mode allows the owner to disable certain performance features and block personal information when letting someone else drive the car. It limits the car's to speed to 70 miles per hour, and caps output at 80 kW. It can also disable mobile app access, Homelink, Bluetooth and wifi and the "Places" function, which stores addresses for you. The folks at Teslarati did find some shortcomings in the new feature, though. Read more at Teslarati. Audi has produced its first batch of e-diesel made from water and CO2. The fuel is made by reacting hydrogen from the water with CO2 to make long-chain hydrocarbon compounds called "blue crude." That can then be refined similarly to crude oil to make e-diesel, which is a fuel free from sulfur and aromatic hydrocarbons. That e-diesel can be used on its own, or mixed with fossil fuel diesel to power a vehicle. "In developing Audi e-diesel we are promoting another fuel based on CO2 that will allow long-distance mobility with virtually no impact on the climate," says Audi Head of Sustainable Product Development Reiner Mangold. Read more in the press release below. Fuel of the future: Research facility in Dresden produces first batch of Audi e-diesel - The verdict: Pilot plant produces high-quality diesel fuel - No need for mineral oil: e-diesel made from water, CO2 and green power - Minister Wanka: "Synthetic diesel using CO2 is a huge success" Audi has taken another big step in the development of new, CO2 neutral fuels: A pilot plant in Dresden has started production of the synthetic fuel Audi e diesel. After a commissioning phase of just four months, the research facility in Dresden started producing its first batches of high-quality diesel fuel a few days ago. To demonstrate its suitability for everyday use, Federal Minister of Education and Research Prof.

Stanford goes from Pikes Peak to Thunderhill with autonomous Audi TTS

In the years since Stanford University engineers successfully programmed an Audi TTS to autonomously ascend Pikes Peak, the technology behind driverless cars has progressed leaps and bounds. Back then the Audi needed 27 minutes to make it up the 12.42-mile course – about 10 minutes slower than a human driver. These days, further improvements allow the vehicle to lap a track faster than a human. The researchers recently took their autonomous TTS named Shelley to the undulating Thunderhill Raceway Park, and let it go on track without anyone inside. The Audi reportedly hit over 120 miles per hour, and according to The Telegraph, the circuit's CEO, who's also an amateur racing driver, took some laps as well and was 0.4 seconds slower than the computer. To make these massive technological advancements, the Stanford engineers have been studying how racers handle a car. They also hooked up drivers' brains to electrodes and found the mind wasn't doing as much cognitively as expected. It instead operated largely on muscle memory. "So by looking at race car drivers we are actually looking at the same mathematical problem that we use for safety on the highways. We've got the point of being fairly comparable to an expert driver in terms of our ability to drive around the track," Professor Chris Gerdes, director of Stanford's Revs Program, said to The Telegraph. With progress coming so rapidly, it seems possible for autonomous racecars to best even elite drivers at some point in the near future. Related Video:

Audi pours $28 million into Silvercar rental company

Want an Audi waiting for you when you land at the airport? Silvercar is the place to turn. The rental car company exclusively stocks fully loaded silver examples of Ingolstadt's finest at airports across the country, available to book via smartphone app with no lines or paperwork. And now the automaker whose vehicles make up its fleet is investing big in the company. Audi's $28-million Series C investment is earmarked to help Silvercar expand into new markets. The company only started in 2012 and already runs locations at airports in Los Angeles, San Francisco, Miami, Orlando, Phoenix, Dallas, Austin, and Denver. In the last six months alone, it opened new locations in Las Vegas, Fort Lauderdale, Chicago, and New York as well. Aside from promoting the rental operation, Audi and Silvercar will collaborate on developing the Audi Shared Fleet program to allow companies to loan vehicles out to their employees. Audi of America chief Scott Keogh will join the Silvercar board, along with Ken DeAngelis from Austin Ventures, which contributed Series B funding alongside Facebook co-founder Eduardo Saverin. Audi to lead $28 million Series C equity issue by car rental innovator Silvercar January 04, 2016 | HERNDON, Virginia - Largest equity issuance yet by Silvercar - Funding will help Silvercar and Audi launch the new Audi shared fleet, a turnkey transportation solution on corporate campuses - Investment extends the Audi connection with Silvercar, which bases its fleet exclusively on silver Audi vehicles Audi is leading a new $28 million Series C equity issuance by Silvercar, the next-generation car rental company. The capital raise is the largest yet for Silvercar, which was founded in 2012 with a fleet consisting of silver Audi models. The Series C announcement comes as Silvercar unveils its enhanced digital and mobile platforms designed for an optimized user experience and expands into Las Vegas, its 12th market, all of them in the U.S. Silvercar also received funding from Series B investors, including Austin Ventures and Eduardo Saverin, co-founder of Facebook. The funding will enable Silvercar to accelerate its award winning airport car rental business and expand to new markets nationwide. Additionally, as part of the next phase of the Silvercar partnership with Audi, the companies will work in tandem to develop Audi Shared Fleet, a turnkey solution for businesses looking to provide accessible transportation to their employees on corporate campuses.