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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 SQ7 TDI would make a compelling option in the US

Intrigued by the prospect of the new Audi SQ7 TDI? We are. And promising though the signs may look, we'll likely still have to wait a while before Audi confirms whether it will bring the new performance diesel crossover to North America, much less announce pricing. But based on the sticker just attached in Europe, the SQ7 looks like a compelling choice – if a difficult one to compartmentalize. Audi has priced its new top-of-the-line crossover at 89,000 euros. Adjust for taxes and exchange rates, we'd likely be looking at an MSRP of roughly $86,000 in US showrooms, if and when it gets the green light from Ingolstadt to embark on the the transatlantic voyage. That places the SQ7 above any diesel crossovers we get in the US, but significantly undercuts the large, gasoline-powered performance SUVs we do get – like the BMW X5 M ($99k), the Mercedes-AMG GLS63 ($124k), and the Porsche Cayenne GTS ($95k) or Cayenne Turbo ($115k). The diesel performance version of the Q7 has more direct competition overseas in the forms of the Porsche Cayenne S Diesel and BMW X5 M50d – but the Audi offers a bigger bang for only a little more buck (or euro) than either. Where Porsche offers 385 horsepower and 627 pound-feet of torque for ˆ87.4k, and the BMW boasts 381 hp and 545 lb-ft for ˆ85.7k, the Audi trumps both with a prodigious 435 hp and a massive 664 lb-ft for only a little more cash. The SQ7 also outperforms both by a significant margin, reaching 62 miles per hour from a standstill in a scant 4.8 seconds, versus the 5.3 achieved by both the Cayenne S Diesel and X5 M50d. That places Audi's latest in something of a category of its own, leaving its similarly priced but less potent diesel competition in its wake. And with more torque but less power, it rapidly encroaches on the levels of performance offered by the top gasoline-powered performance crossovers – whose 0-62 sprints range from 4.2 seconds (in the X5 M) to 4.6 (in the GLS 63). The question on our minds is whether Audi will bring the new SQ7 TDI to these United States. Our sources tell us the chances are good, but far from confirmed. Our hopes were further raised by its appearance in the latest Captain America movie. But it's the SQ7's performance vis-a-vis the competition – difficult as it may be to categorize – that has whetted our appetites the most.

Audi renders crossover concept for Detroit, is it the Q1?

Judging by the direction Audi is taking with recent concept vehicles, the forthcoming Audi Q1 crossover - confirmed for production in 2016 - should be an exciting little crossover. Last year, the automaker revealed the Crosslane Coupe Concept, and now it has announced it will reveal a new CUV concept at the Detroit Auto Show next month.
Teased in a trio of sketches, Audi says this unnamed concept is designed with a shooting brake style, which to us it makes it look like a combination of an Audi Allroad and a three-door A3. Little information is available on this concept, but it is about seven inches shorter than the Q3 and Audi notes that it will possess "design elements that are typical of e-tron models," which suggests some sort of powertrain electrification. There's still about a month before the Detroit show kicks off, but until then you can check out the sketches and press release (posted below) that Audi has provided.