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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.

Munich prosecutors arrest Audi employee in emissions probe

Munich prosecutors arrested an Audi employee on suspicion of fraud and false advertising in connection with the carmaker's emissions scandal, the first arrest in Germany related to Volkswagen's diesel scandal. The Audi employee was arrested on Monday, at the behest of Munich prosecutors, a spokeswoman for the Munich prosecutors office said on Friday. When asked if the arrest was at the request of US authorities, the spokeswoman said it was not. She did not give the name of the person. Munich prosecutors declined to comment on whether the arrested person is a current or former Audi employee. Audi and parent Volkswagen both declined to comment. On Thursday, the US Justice Department said it charged former manager Giovanni Pamio with directing Audi employees to design software to cheat US emissions tests in thousands of Audi diesel cars. Audi is a division of Volkswagen Group. The Munich prosecutor's office said the Audi employee was brought before a judge on Tuesday and was now being held in custody. The spokeswoman declined to discuss the possibility of the detained person being extradited to another country or comment on whether Munich prosecutors were in touch with US authorities. The German arrest was part of a wider probe into fraud and false advertising and is a consequence of "findings following searches," the spokeswoman said. In March, Munich prosecutors searched the offices of Jones Day, the lawfirm Volkswagen had hired to lead an internal investigation into its emissions scandal and Audi's headquarters. Volkswagen condemned the searches at the time, and never published the full findings of its internal investigation which was being conducted by Jones Day. The raids by Munich prosecutors in March sought to shed light on who was involved in the designing and using illicit software used in 80,000 VW, Audi and Porsche cars with bigger 3.0-liter engines. No members of the Audi management board are being personally investigated as part of that probe, the spokeswoman said on Friday. In the criminal complaint released by US authorities on Thursday, US prosecutors charged that Pamio ignored or suppressed warnings by certain Audi engineers that the pollution control systems being used on the brand's diesel engines violated US clean air rules. US prosecutors said Pamio had ordered subordinates to send false information to American regulators stating that Audi's "clean diesels" did not use technology designed to cheat federal pollution tests.

The 2014 Rolex 24 at Daytona: What we learned, what we saw

Two days after the flag dropped on the 2014 Rolex 24 at Daytona, people are still trying to figure out what it might portend for the rest of the season. In 24 hours, two minutes and 24 seconds, 695 laps were completed by the car that crossed the line first. During that time, 67 cars began the race, 18 of them retired. There was that accident, and a red flag. There were supposedly slower classes beating supposedly faster classes. There were 16 caution periods, including that yellow flag. And then there was The Decision. And Then The Uproar. And then The Reversal.
There was also some pretty good racing, so let's have one last look at the weekend. Oh, and there was that 1964 Ferrari 250 GTO Series II...
If you want to skip the reading bits and go to the photos, there's a high-res gallery of 158 images above and a couple more below. Enjoy.