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To solve diesel problem, VW might need two fixes

Volkswagen says that a fix is on the way for its 11 million vehicles around the globe that are equipped with diesel engine software that can evade emissions tests. The problem might be far more complicated than simply creating a single solution for all of them, though. According to Automotive News citing Reuters, two remedies to cover different NOx-reducing systems could be necessary, and both potentially affect performance. Earlier examples of the EA 189 diesel engine used a lean NOx trap to reduce the harmful material coming from the tailpipe. According to experts in the Automotive News report, a software update might allow the engines to achieve compliance, but that could affect fuel economy. VW already tried this route once before the scandal came to light, but tests by the California Air Resources Board still showed the figures were too high. Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive News, a software update for this equipment might increase the amount of the substance used. Not only would that mean topping up the fluid more often, but there still could be some reduction in fuel economy. But, since the 2-liter, 4-cylinder TDI engine that sits inside the diesel vehicles first mentioned as being affected by the issue in the US don't have a urea treatment system, VW would need to install them into these cars. VW still hasn't officially outlined its solution (or solutions) to the emissions issue but is expected to soon. The automaker's long-term evasion of regulations with these diesel engines pumped vast quantities of additional NOx into the air. The substance is known to be linked with smog and acid rain. The US Department of Justice is already beginning an investigation into the company, and politicians are pushing for harsh punishments.

Audi boss can't say no to F1 program

Audi has been a dominant force at the top rung of endurance racing for over a decade. Still, rumors have fired up again about the possibility of the company making a big switch to Formula 1. The Four Rings' boss Rupert Stadler isn't ready to make that decision yet, but he's not ruling it out. When asked by Auto Express about the potential of Audi entering F1 in the next five years, Stadler gave an intriguing answer. "It's something we're looking at, but then we're always looking at it and many other things. But I can't say yes or no," he said. While not at all a confirmation, that's hardly an outright denial, either. According to unnamed insiders speaking to Auto Express, Audi is under pressure from Volkswagen Group to leave the FIA World Endurance Championship. Right now, the Four Rings is competing directly against its corporate sibling Porsche. While that might make for a good rivalry on the track, it doesn't necessarily make sense financially. Rumors last year suggested that Audi might leave the WEC and DTM to finance the F1 project. Two possibilities were proposed at the time: act as engine supplier to Red Bull or buy Toro Rosso to run a whole new team. Stadler's non-denial might also indicate that Audi's view on F1 is shifting. In the past, the company's opinion has been much more obvious. Last year, Audi Sport tweeted that the rumormongering was "pure speculation." As far back as 2011, the brand's motorsport boss said grand prix racing had "no relevance to the road." Related Video:

Conquest and controversy conclude the 2014 Rolex 24 at Daytona [spoilers]

If you don't wish to know who won the 2014 Rolex 24 at Daytona, you should avert your eyes right now. We'll even give you a double-space to skedaddle...
For those of you still with us, the first race in the United SportsCar Championship (USCC) is done, but the discussions about it certainly won't end for a while. Daytona Prototypes claimed the first four overall places, the top spot taken by the No. 5 Action Express Coyote-Chevrolet Corvette DP driven by Joao Barbosa, Christian Fittipaldi, Sebastien Bourdain and Burt Friselle. The 16th and final caution of the race bunched the field up for an eight-minute sprint to the flag, so the first place getter finished just 1.4 seconds ahead of the No. 10 Wayne Taylor Racing Dallara-Chevrolet Corvette DP driven by Max Angelelli. Third place went to Brian Friselle in the No. 9 Action Express Chevrolet Corvette DP, 20 seconds down. Chevrolet power hasn't taken the overall win since 2003, eleven years later it scores a one-two-three-four. The No. 6 Muscle Milk/Pickett Racing ORECA-Nissan 03 scored fifth place, the top LMP2 finisher.
The Prototype Challenge class win went to the No. 54 CORE Autosport team of Colin Braun, Jon Bennett, Mark Wilkins and James Gue.