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Watch the Audi R18 E-Tron Quattro long-tail testing at Monza

Audi released a single photo of the long-tailed version of its R18 E-Tron Quattro Le Mans racer, but the photo didn't offer the best view of the stretched rear. The car has been caught testing at Monza, in Italy, and not only do we get a better view of what it's got out back, we get pretty awesome sound as it makes high-speed runs past the camera.
Since the 2013-spec car was found to be down on performance versus the 2012, the long-tail is a different evolution to see if Audi can eke out more performance from its already dominant chassis. Have a look and a listen in the video below.

Audi's Super Bowl commercial hopes for a more equal future

While many of the automotive Super Bowl commercials we've seen so far have been comedic, Audi's ad takes a more serious, but hopeful, tack. The ad revolves around a soap-box derby race in which only one driver is a girl. The rest of the grid has a bunch of (oddly mean-looking) boys. On the sidelines is the daughter's dad, who narrates for the duration of the commercial. He doesn't talk about the race, though. He instead muses on the income gap between men and women that he's seen through his life and his parents' lives. He wonders how he would explain to his daughter that men are valued more than women, regardless of their ability. All the while, the ad shows his daughter steadily moving up in position in the race. It seems to be a metaphor for the progress women have made over the years in equality, but still not quite reaching the goal. At the end of the race, the daughter manages to win by a nose, and at this point, the father becomes a bit more optimistic. He thinks that maybe he won't have to explain this because, perhaps, women will have equal value when she grows up. He and his daughter then gather up their stuff and take off for parts unknown in an Audi S5 Sportback, followed by a message stating Audi of America's dedication to equal pay. The message isn't subtle, but that's fine since it's a good one. It's surely good PR for Audi, too, and is a far better attempt at attracting women to the brand than something like the horribly condescending Seat Mii by Cosmopolitan. Related Video:

Audi says new 48 volt micro-hybrid system improves fuel economy, paves way for electrification

Most cars use a 12-volt system to power their electrical components. But, with more and more electric bits and bobs being added to new vehicles, a dozen volts is looking a bit weak these days. In fact, Audi says that standard 12-volt systems are being stretched "to their very limits." Enter 48 volts. If used in a car that gets 40 mpg, that would translate to around 43.5 mpg. Audi is testing a supplemental 48-volt electric system in two prototype vehicles – modified mild-hybrid versions of the A6 TDI and the RS 5 TDI – in order to add in more electric technology (an electric compressor, for example, to improve acceleration) and "convenience systems for dynamic chassis control." Audi says it has more applications in the pipeline, but the overall gist is that the German automaker sees 48 volts as an "important building block in electrification strategy." As you can see in the picture above (click to enlarge), the RS 5 TDI concept uses a li-ion battery installed in the back of the car and an alternator to provide 48 volts when the engine is off. Audi says that the 48-volt system can save up to 0.4 liters of fuel per 100 kilometers. To put that into US numbers, if used in a car that gets 40 miles per gallon today, that would translate into a bump up to around 43.5 mpg. The Advanced Lead Acid Battery Consortium (ALABC) is also working on a 48-volt system to improve fuel economy and we've got a deep dive of Audi's electric turbocharger here. Even more powerful and efficient – the new 48-volt technology from Audi Important building block in electrification strategy More voltage and more power for new technologies Scalable platform concept suitable for wide-ranging uses Ingolstadt, August 25, 2014 – Audi is to upgrade part of its vehicle electrical system from twelve to 48 volts. The move represents another technical building block for facilitating the integration of new automotive technologies while increasing the power and efficiency of its cars. "We are using the full bandwidth of electrification in our drive principles strategy. Running part of the vehicle electrical system at 48 volts plays a central role in this," commented Prof. Dr. Ulrich Hackenberg, Member of the Board of Management for Technical Development at Audi. "It enables us to make more energy available.