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Audi outlasts rivals to win 13th Le Mans title

As is so often the case, the 2014 Le Mans was a war of attrition, and Audi managed to prevail once again after all 24 hours had been recorded in the history books, with its Audi R18 E-Tron Quattro claiming first and second places, followed by Toyota in third. Drivers Marcel Fassler, Andre Lotterer and Benoit Treluyer inherited the lead in their No. 2 Audi after the No. 7 Toyota, driven by pole-sitter Kazuki Nakajima, was forced to retire with electrical problems in the 15th hour.
The No. 2 Audi led the race until it was forced to the pits to replace a turbocharger in the 17th hour, allowing the No. 1 Audi, driven by Lucas di Grassi, Marc Gene (who was a last-minute replacement for Loic Duval, who crashed hard during practice) and defending champion Tom Kristensen, led the race until the 21st hour, when it too had to pit with turbocharger issues. This gave the No. 20 Porsche of Timo Bernhard, Brendon Hartley, and Mark Webber the lead until it was forced off the track with gearbox problems, eventually finishing in 38th position.
In LMP2, the Jota Sport Zytek Z11SN-Nissan driven by Simon Dolan, Harry Tincknell and Oliver Turvey claimed victory, the first five LMP2 finishers all powered by Nissan. Down a level in GTE-Pro, No. 51 AF Corse Ferrari 458 Italia GT2 driven by Gianmaria Bruni, Toni Vilander and Giancarlo Fisichella finished one lap ahead of the leading Corvette Racing C7.R. And finally, the No. 95 Aston Martin Racing Vantage GTE driven by Kristian Poulsen, David HeinemeierHansson and Nicki Thiim won the GTE-Am race two laps ahead of a Proton Porsche 911 GT3 RSR.

The Audi Q7 doesn't want me to speed and I'm not totally okay with that

I'm a big fan of adaptive cruise control. My commute is 50 miles each way, almost all on freeways here in Michigan. If everyone drove at the same speed there'd be little need for smart cruise, but I live in reality where people camp out in the left lane and practice going from the gas to the brake for no apparent reason. Radar cruise systems let me set my max speed and just worry about steering. But Audi has gone a step further with its adaptive cruise system. And it's a step I'm not sure I'm comfortable with. Audi's system, as featured on the new Q7, has a feature that uses the forward-facing camera to read speed-limit signs, something that's becoming common in Europe and is now making its way here in the continent's luxury cars. That part's fine; it's useful information and gets nicely integrated into Audi's Virtual Cockpit screen and on the head-up display. What the car then does with that info, however, is the issue: If your set cruise speed is higher than the speed on a sign you pass, the car will drop the cruise speed down to the limit. But it's not perfect. On one stretch of highway, the Q7 picked up the speed limit posted on the parallel service road, dropping me down from a little above the limit to 30 mph. It didn't slam on the brakes, but it did confuse me at first and require intervention before the car slowed down to a crawl. This feature isn't ready for primetime. Luckily, it can be turned off or switched to a mode where it gives you a warning that the speed limit has changed (or at least that the car thinks it has) and lets you react before the set cruise speed is changed automatically. When activated, it's a safety issue. A more serious one, in my opinion, than driving a little over the speed limit, especially when it means interrupting the flow of traffic. There's nothing predictable about a car trundling along in the fast lane and then completely letting off the gas. It's not predictable for the driver behind you, and it's not something a driver expects of their own vehicle. Yes, this feature was obviously developed for people driving on the Autobahn, where speeds can drop down from unlimited to a slow crawl pretty quickly when entering a construction zone or approaching a built-up area. German roads also have more consistent signage, so the false-positive scenario I experienced might not have come up there.

Audi creates new diesel fuel from carbon dioxide and water

What if you could power cars of the future with pollution created by the cars of the past? That's what German automaker Audi is hoping to achieve by creating a new synthetic fuel using renewable energy to turn water and carbon dioxide gas into a new kind of fuel they call "e-diesel." The new diesel is being produced at Audi's pilot plant Sunfire in Dresden, Germany. Only a few gallons were created, which the German Federal Minister of Education and Research Johanna Wanka put into her Audi A8 to prove the fuel's bonafides. The base fuel is known as "blue crude" and begins from a green source. Audi uses electricity from wind, water or solar power sources to separate hydrogen from oxygen in water. The hydrogen is then mixed with carbon dioxide which has been converted in carbon oxide. The blue crude is then further refined to create the e-diesel. The carbon dioxide is currently supplied by a biogas facilities, but some of that CO2 was captured from the air. "The engine runs quieter and fewer pollutants are being created," says Sunfire CTO Christian von Olshausen. The fuel can be combined with conventional diesel fuel, as biodiesel fuels already and would be competitively priced against regular diesel, according to Gizmag. Sunfire can produce about 42 gallons of e-diesel a day. That seems like barely a drop in the bucket in terms of Europe's energy use, but Audi is ready to commercialize the technology with plans to expand production with a bigger facility in the future.