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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.

Audi to spend $17 billion to fight BMW

It's no secret that VW Group, parent company to not only Volkswagen but also Audi, Bugatti, Bentley, Lamborghini, Porsche and Ducati brands sold in the US, is determined to become the world's largest automaker. Even more impressive is that VW is prepared to spend billions to make it happen.
With that comes word that VW Group will be spending $17 billion on its Audi brand over the next three years to push itself above rival BMW. The money will be invested in both vehicle development (including lightweight auto design and alternative powertrains) and facilities (including expansion in Hungary, China and new operations in Mexico). The luxury brand is focused on global manufacturing infrastructure.
Already Europe's best-selling luxury brand, Audi's objective is to overtake BMW by the end of the decade by selling more than two million cars per year (BMW is shooting for 1.54 million sales in 2013). If those objectives are met, VW Group should be on track to be the industry's volume leader by 2018.

Audi could buy back 25,000 older diesel Q7s

Audi will follow the example of Volkswagen here in the US, according to Germany's Der Spiegel. The paper reports that the luxury brand will buy back 25,000 vehicles with 3.0-liter, turbodiesel V6s that don't pass US emissions tests, and repair others. While we can expect an official update on the 3.0-liter TDI during a hearing on November 3, Der Spiegel's report could serve as a preview. The paper reports Audi will only offer owners of older Q7 TDIs buybacks. According to Reuters, Audi will repair an additional 85,000 vehicles that violate emission laws, although the report doesn't specify models. Audi USA's consumer information website lists an EPA "notice of violation" for all diesel-powered A6, A7, and A8 sedans, as well as Q5 crossovers, from model years 2014 through 2016. The Q7, meanwhile, stretches from to 2009 to 2016. We should also consider what Der Spiegel's report means for German consumers. Volkswagen has received a lot of heat across the pond over its decision to not offer buybacks in Europe, owing to the far greater number of affected vehicles. That both VW and Audi are looking at US buybacks is surely something that will irk the brands' critics in their homeland. We'll have more on Volkswagen/Audi's plans for the 3.0-liter TDI V6 on November 3. Related Video: