2011 Black 3.0l Tdi Prestige! on 2040-cars

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Audi is working on a suspension that gets power from bumpy roads

Regenerative brakes aren't new. They're on virtually every hybrid and EV, and they're even starting to pop up on traditional gas-powered cars, like with the i-ELOOP-equipped Mazda6. But even with these systems, cars can get more efficient, and Audi thinks it found yet another source of wasted energy. The source? The suspension. The idea is to turn the kinetic energy that goes into the dampers into usable energy instead of as waste heat. Audi isn't the first auto company to come up with regenerative suspension – nearly three years ago, ZF introduced its GenShock technology, which used a valve attached to traditional, oil-filled hydraulic shocks to recapture kinetic energy from movement caused by bumps in the road. Audi's prototype technology, which it calls eROT, replaces traditional dampers with horizontally oriented electromechanical rotary dampers. eROT is apparently short for electromechanical rotary damper. Neat. In testing, eROT recovered an average of 100 to 150 watts on a typical German road, three watts from a fresh piece of pavement, and 613 watts on a rough stretch of tarmac (wattage is calculated as power over time, so this is actually the rate at which the system harvests energy). The dampers channel that energy to a tiny, 0.5-kWh, 48-volt battery. The prototype is claimed to cut CO2 emissions by three grams per kilometer (4.8 grams per mile), while the company believes a future production version could save up to 0.7 liters of fuel per 100 kilometers of driving. Converting the savings to American miles per gallon isn't easy, so we'll use a practical example. In the US, the Q7's supercharged 3.0-liter V6 returns a combined rating of 21 miles per gallon, which works out to 11.2 liters per 100 kilometers. Apply eROT's 0.7L/100km savings, and the Q7's economy would improve to 10.5L/100km, or 22.4 mpg, a 1.4-mpg improvement. That's not huge, but because math, 0.7L/100km is more dramatic on a more fuel efficient vehicle – taking an A3's 27-mpg combined rating and adding eROT would drive efficiency up 2.4 mpg, for example. There are a few other big benefits beyond fuel and emissions savings – Audi claims eROT provides a more comfortable ride than traditional active suspensions, because engineers can tune the compression and rebound strokes independently of each other. Beyond that, the horizontally oriented rear suspension geometry means more cargo space, since the dampers don't poke up into the cabin like they normally do.

2014 Audi S3 Cabriolet

Drivers are either droptop people or they're not. As most usually aren't - at least as far as the willingness to buy one is concerned - all convertibles tend to remain strictly niche cars. Thus, automakers must ask a noticeably higher price for them.
The Audi S3 Cabriolet is about as niche as you can get in the open daylight of mainstream automaking. Of course, the S3 cab doesn't really need to sell in big volumes; it exists because it's an easy and not too costly bit of flair for the company. In the US, this model would probably base out at around $44,000 if it were to join our fleet, which is problematic, as I'll soon explore.
In what may be a sign that Audi is essentially okay with all this, it had me up to central Sweden to twist around on the snow and ice in the open S3. The grounds ended up offering precious little ice and snow, so I drove the two-door ragtop on dusty, thawing Scandinavian roads. This was a blessing really, since ice driving in a cabrio - even a Quattro one - doesn't really reveal much of anything about such a car in its typical day-to-day life.

GRAND-AM, IMSA announce deal to bring DTM racing to US

It won't be until 2015 at the earliest, but the International Motor Sports Association (IMSA), Grand-Am and the Internationale Tourenwagen-Rennen have agreed to a licensing and cooperation deal that could bring a version of Germany's DTM series to the US.
When the American Le Mans Series and Grand-Am are officially combined next year, the resulting body will be called United SportsCar Racing (USCR). IMSA will be the sanctioning body for that series, and DTM races could be run as support events. It was also suggested by an ALMS chief that DTM races could be standalone or join NASCAR and IndyCar weekends.
With the so-called DTM America finally agreed to, there is now a way for manufacturers to run the same DTM-type cars in Europe, the US and Japan - last year Japan's Super GT series agreed to adopt "the basic technical regulations" of DTM for the GT500 class, the top class in the series. That already puts six manufacturers in play: Mercedes-Benz, Audi and BMW that run in Germany's DTM and Honda, Nissan and Lexus that run in Super GT. The DTM oversight body has invited American brands to Germany for the opening round of the 2013 season, and will begin actively courting their participation in the US series. Check out the press release from Audi with comments on the deal below.