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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.

24 Hours of Le Mans live update part one

We tasked surfing journalist Rory Parker to watch this year's live stream of the 2016 24 Hours of Le Mans. What follows is an experiment to experience the world's greatest endurance race from the perspective of a motorsports novice with a profanity-laden stream-of-consciousness writing style. Parker lives in Hawaii and spends far more time spearfishing than behind the wheel of a car. Jump ahead to Part Two here, and Part Three here. Big Money and billionaire hobbyists and rockets on wheels. Jets belching French color smoke overhead. Balance of power fuckery. Plenty of water on the ground this morning. Absurdly expensive motorcars lined up in the pissing rain. Fast twitch lunatics behind the wheel. Chomping at the bit. Let's go let's go let's go! Race hasn't even started, Ford #67 maybe dealing with clutch issues. Karma? That beautiful bastard Brad Pitt's out on the track, waving the tricolor flag. It's a standing start in "Noah's Ark" weather and the 2016 24 hours of Le Mans is go! First lap takes place behind the safety car, finished in a record setting 8 minutes 27 seconds. Wrong kind of record maybe, but this is the first time I've set my mind to watching the whole damn race. Feel like I'm part of history. 3:00 AM on Kauai, a little too early for life. Sucking down coffee like a maniac. Don't fall back asleep. Got my hands on four hours of rest, how much more can I need? Better be enough for the next twenty four hours. Gonna get kinda punchy toward the end. Jason Statham on the scene. Four feet of solid muscle, non-existent hairline. Lovely wife peanut gallery sitting next to me calls him the "best race car drive in the world." Not sure if she's serious. Toss up, could go either way. Statham's a funny guy. Heir to the Bruce Willis comedy action crown. Really good in the movie where the fat comedy lady plays a spy. Ford's on the road. Problems with gearbox pressure, apparently. Nearing a half hour in and the safety car is still on the track. Hellish amounts of water on the ground, in the air. Visibility is garbage. Getting better. Twitter wags, "Not with a bang but a whimper." Just building suspense. Mother Nature felt like killing some people today, race officials need to dial back the drivers until it dries a tad. Normal inclination would've seen 'em flying, guaranteed early lap wrecks. Sad news for that bloodthirsty part of my lizard brain I try and keep suppressed. Good news for humanity. #12 in the pit for a bit.

What the Volkswagen I.D. concept tells us about the post-TDI future

If you've been paying attention, 2016 hasn't been a great year for Volkswagen. The TDI scandal removed VW's last crutch between our internal combustion present and the electric future, and so the company found itself scrambling to shift resources to show what's next right now. It's naive to assume that this is truly the sort of fairytale comeback story that VW's spin doctors would have us all believe, but it's notable that instead of flinching or pointing fingers, the engineers got to work. What they've produced is the I.D. concept, the third wave in VW's volume car history after the Beetle and Golf. The transaxle Golf was more than simply an updated Beetle, and likewise the I.D. is more than an electrified Golf. VW says the I.D. won't replace the Golf, but they said the same thing about that car replacing the Beetle. It's only a matter of time. VW says the I.D. won't replace the Golf, but they said the same thing about that car replacing the Beetle. It's only a matter of time. The I.D. approach is refreshingly simple: no carbon fiber chassis, no exotic battery chemistry, no outrageous concept car styling. The MEB chassis (the German acronym for modular electric platform) is made out of a traditional mix of high-strength steel grades to save costs and utilize existing factories. The battery is integral, not swappable, to reduce complexity and increase structural rigidity. It's also uses lithium-ion chemistry because of a proven track record and an existing (albeit deficient) supply chain. Contrast that with the e-Golf, which shares its chassis with the conventional internal-combustion cars. Fitting the battery and its ancillary systems became complicated and expensive. The skateboard installation in the I.D. will allow the pack to be optimized for the space available, reducing costs. As we've already reported, MEB will be shared across all VW Group brands to achieve an economy of scale, and the modular platform can be stretched to the size of roughly a Passat and down to a car slightly smaller than the I.D. It can be given all-wheel drive, although VW's e-mobility chief Christian Senger is quick to point out that the standard rear-drive configuration provides plenty of traction because of optimal weight distribution achieved with battery in the middle of the chassis. It makes all-wheel drive more of a bonus rather than a necessity in bad weather.