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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.

New Audi A5 to debut in Ingolstadt on June 2

Audi will introduce the second-generation A5 during a late-night lightshow at its Ingolstadt, Germany, museum on June 2. In the announcement, the company only called out the standard model, but a new S5 coupe is probably not too far behind. Details on the next A5 have been scarce, and spy shots haven't revealed much. Our most recent images come from June of last year and show a vehicle that more or less follows the current A5's theme – a two-door A4 with a few small visual tweaks to distinguish it from the sedan, including a wider stance. Expect an interior treatment very similar to the A4's as well. The new coupe's mechanicals should mirror those of the four-door as well. The A5 will likely stick with a 2.0-liter, turbocharged four-cylinder (the A4's currently makes 252 hp) and ditch the current car's eight-speed automatic transmission for a new seven-speed dual-clutch. Unlike the sedan, the coupe is likely to continue offering a six-speed manual, as it is positioned as a sportier option even if it shares the A4's platform. Front-wheel drive will be standard, while Quattro all-wheel drive will be the one to buy. The S5 should definitely offer a manual again, along with the S4's 354-hp turbo 3.0-liter V6 and standard all-wheel drive. A seven-speed dual-clutch will be an optional extra, again, just like on the S4. Timing of the new A5's arrival appears to have shifted. A leaked product roadmap originally called out April 2016 for the A5 and S5 hardtop and May 2016 for the Cabriolet versions. Based on the June 2 debut, it looks like Audi pushed those dates back, so we'd expect the new convertibles to make their debut sometime in July. The new A5 is pegged to arrive as a 2018 model. We'll have all the details on the new A5 Coupe when it debuts early next month. Related Video:

Audi CVT suit settlement given green light, 64,000 cars covered

Audi drivers, listen up. If you bought or leased a 2002-06 model-year A4 or A6 with a factory-installed Continuously Variable Transmission (CVT) that failed, you may be entitled to reimbursement under a recently settled class-action lawsuit with corporate parent Volkswagen.
According to Automotive News, the settlement covers about 64,000 vehicles and alleges that "manufacturing and design problems caused the transmissions to fail and left owners stuck with repair costs." While the suit also argues Audi was aware of these issues (going so far as to hide that knowledge from consumers), the settlement stops short of acknowledging any wrongdoing by the German automaker.
Audi drivers are eligible for a cash reimbursement if their CVT repairs occurred within 10 years or 100,000 miles of the date they bought or leased the vehicle before June 19, 2013. To be eligible for compensation, drivers must submit a claim form (found here) with supporting documents by November 18.