2009 Audi A4 Quattro Base Sedan 4-door 2.0l on 2040-cars

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The 2014 Rolex 24 at Daytona: What we learned, what we saw

Two days after the flag dropped on the 2014 Rolex 24 at Daytona, people are still trying to figure out what it might portend for the rest of the season. In 24 hours, two minutes and 24 seconds, 695 laps were completed by the car that crossed the line first. During that time, 67 cars began the race, 18 of them retired. There was that accident, and a red flag. There were supposedly slower classes beating supposedly faster classes. There were 16 caution periods, including that yellow flag. And then there was The Decision. And Then The Uproar. And then The Reversal.
There was also some pretty good racing, so let's have one last look at the weekend. Oh, and there was that 1964 Ferrari 250 GTO Series II...
If you want to skip the reading bits and go to the photos, there's a high-res gallery of 158 images above and a couple more below. Enjoy.

Audi builds 5-millionth vehicle with Quattro

Quattro, the trademark name Audi has put on its all-wheel-drive system engineered for passenger vehicles, recently celebrated its five-millionth installation. The driveline has been offered in more than 140 different vehicles since its introduction more than three decades ago.
The all-wheel-drive technology made its world debut at the 1980 International Geneva Motor Show, beneath the floorpan of the Quattro Coupé, a low-volume two-door. It didn't take consumers long to embrace Audi's innovative approach. While most four-wheel-drive systems at that time utilized heavy transfer cases or second cardan shafts, Quattro was virtually tension-free, light, compact and efficient. Most importantly, enthusiasts found it was especially suitable for sports cars.
Today, the automaker offers Quattro on its full line of passenger vehicles and it is unquestionably successful (the technology enjoyed a 43 percent take rate in 2012). On models with transverse-mounted engines (A3 and TT), Audi uses an electronically controlled multi-plate clutch with hydraulic actuator. Under normal conditions, the clutch sends power almost exclusively to the front wheels (if wheel slippage occurs, up to 100 percent of the torque may be sent to the rear). Vehicles with transverse-mounted engines (A4, A5, Q5, etc...) use a self-locking center differential sending 40 percent of the engine torque to the front axle and 60 percent to the rear under normal conditions (it is able to send the majority of the power to the axle with better traction when needed). The highest-performing Quattro systems use torque vectoring to further improve cornering grip and speeds.

Recharge Wrap-up: Audi R18 e-tron Quattro wins WEC opener, Toyota Mirai goes to DC

The Audi R18 e-tron Quattro has won the World Endurance Championship season opener at Silverstone. Drivers Marcel Fassler, Andre Lotterer and Benoit Treluyer piloted the number 7 hybrid racecar to a hard-fought win in the six-hour UK race. "This victory is a dream start of the season and a great reward for the whole squad for the hard work last winter," says Audi Motorsport boss Dr. Wolfgang Ullrich, congratulating the team. Audi's second R18 took fifth place in the race after a couple of unscheduled pit stops ate up precious time. Read more in the press release from Audi, below. Mini and Spanish designer Jaime Hayon are presenting new versions of the Mini Citysurfer electric scooter concept at Salone del Mobile in Milan, Italy. The installation, called "Urban Perspectives" depicts an idea of the future of urban mobility. The imaginary living space houses two examples of the Citysurfer concept designed by Hayon. The first is painted to resemble blue and while porcelain, with dots and stripes to give it an upbeat look. The second uses more upscale materials like anodized metal, copper and leather to blend modern and classical elements. The foldable Citysurfer scooter can travel 10 to 15 miles on a charge, and is designed fit and charge inside the trunk of a Mini Cooper. Read more from Mini. Tesla has announced the locations of its first Superchargers in Australia. It will install eight charging booths at the Goulburn Visitor's Centre, about 120 miles southwest of Sydney. The Goulburn superchargers will be powered by renewable energy. Tesla plans to install a network of Superchargers in cities along the route connecting the Sunshine Coast north of Brisbane south to Melbourne. Read more at Clean Technica. The Toyota Mirai will be on display at the National Mall in Washington DC to celebrate the 45th anniversary of Earth Day. Toyota is a sponsor of Global Citizen 2015 Earth Day from April 17 to 19, which will include speakers, musical performances and, of course, Toyota's new hydrogen fuel cell car. "Earth Day 2015 is a great platform to educate the public about hydrogen fuel cell technology and the potential of hydrogen as a future fuel," says Toyota's Bob Carter. Also in April, Toyota will continue to enlighten the public about the Mirai and hydrogen technology in Union Square Park in New York on April 19, and at Waterkeeper Alliance's "Keep it Clean" comedy event in Los Angeles on April 22. Read more from Toyota.