2008 Porsche 911 2dr Cabriolet Turbo on 2040-cars

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Xcar considers the Porsche 911 GT3's PDK

Porsche ruffled some feathers when it unveiled the latest 911 GT3 a couple of years ago with a dual-clutch transmission instead of an old-school manual. The rationale was (and remains) that the PDK makes the enthusiast's Elfen faster than it would be with a stick. The purists scoffed, but Zuffenhausen held firm – and even did the same with the even more hardcore GT3 RS. In its latest video, the boys at Xcar set out to find out if the GT3 with its fancy automated gearbox is as good as the previous model (or as good as the current model could be) with a manual – and took in some of the track toy's other trickery while they were at it. Check out the video above to find out what conclusion they reached.

Mercedes-AMG GT S pit against Porsche 911 Turbo in Evo Deadly Rivals test

When Mercedes-Benz announced that its all-new AMG GT would start at $129,900 deeply undercutting the $200,000-plus of its predecessor, the SLS AMG, immediate questions focused on how it'd stack up against the latest crop of high performers that occupy the mid-$100,000 range. Evo, over in the UK, didn't have to wait all that long. The latest installment in the outlet's "Deadly Rivals" series compares the AMG GT with the latest Porsche 911 Turbo. On paper, the test is sure to be interesting. The Mercedes uses a 4.0-liter, twin-turbocharged V8 with 503 horsepower and 479 pound-feet of torque, while a seven-speed AMG Speedshift dual-clutch shuffles power to the back axle. The 911 Turbo's formula is more of a known quantity – 520 hp from a twin-turbo, 3.8-liter flat six with the company's own PDK working in unison with all-wheel drive, torque vectoring and rear-axle steering. Of course, we're not going to spoil the results for you. Take a look at the video up top, and let us know what you think of Evo's latest track battle.

The 2013 Rolex 24-hour race at Daytona comes down to the last hour [spoilers, w/video]

It took 24 hours to run the race, but it was the last one was stuffed with the high action as four cars were still trying to figure out how to gain victory on the track and in the pits. Along with the obligatory crashes, spins, mechanical issues and retirements had come numerous penalties, a double-digit number of full-course yellows and two hours of fog that turned early Sunday morning into a stretch of parade laps.
The final hour would make up for the morning - drivers who might have been happy just to get on the podium had a shot at victory as the end of the race approached, and that turned into a few gambles that paid off, and at least one that didn't...