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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 SQ5 comes to America with 354-hp gasoline engine

When we first saw the Audi SQ5 TDI unveiled back in June, we could feel that pit in our stomach. Here sat a powerful, sporty, mean-looking crossover, and we just knew that Audi wasn't going to be bringing it to the US. And we were right. While we won't be getting the diesel version of this crossover with its 479 pound-feet of torque, we will instead be getting a gas-powered, supercharged V6 - the same powertrain as the S5 - and that's a mighty fine consolation prize if you ask us. The US version of the 2014 Audi SQ5 will debut next week at the Detroit Auto Show, and it will go on sale this fall.
Ditching the diesel engine, the US-bound SQ5 loses some torque but gains plenty of horsepower with Audi quoting power ratings of 354 horsepower and 346 lb-ft from the supercharged 3.0-liter V6. Power is fed through an eight-speed automatic to all four wheels giving the small CUV impressive performance numbers. The 0-60 mile per hour time is expected to be in the low five second range to go with an electronically limited top speed of 155 miles per hour. The suspension has been upgraded as well to improve handling, but it also gives the SQ5 a sportier appearance with a ride height that has been lowered by more than an inch compared to a standard Q5.
Speaking of styling, the 2014 SQ5 gets all of the expected "S" model upgrades, especially when it comes to the new front fascia and grille, the standard 20-inch, triple-spoke wheels and the quadruple exhaust tips. Only two colors will be available on the SQ5: Panther Black and Estoril Blue. Inside, the SQ5 will get a sportier cabin with bright, "aluminum-look" pedals and shift paddles, and the materials will also get an upgrade to include Nappa leather and Alcantara as well as accent options that include carbon fiber, piano black, aluminum or wood finish.

Audi 4.2-liter V8 to live again in next-gen R8

Fellow auto enthusiasts, it looks like the car gods have smiled upon us. Word is that Audi's stupendous 4.2-liter V8 will once again be available in the next-generation R8. Rumors pegged the trusty 4.2 as a dead engine revving, thanks to Audi's newer 4.0-liter twin-turbocharged V8 found in models like the S6 and S7.
We expected the 4.0-liter to be the go-to engine in the next R8, but according to Car and Driver, there have been some issues cooling the force-induced mill in the mid-engine R8. The issues are so severe, in fact, that the 4.2 is going to be retained in the car's second generation.
It's more than just practical matters like cooling that are keeping the R8 from going turbocharged. C/D reports that even with the current state of forced induction, a turbocharged R8's throttle response and its resultant exhaust note would suffer too much to be feasible.