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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.

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

2015 Porsche Cayenne Turbo S gets faster, more powerful [w/video]

Porsche just isn't letting development of the Cayenne Turbo S cease. The 2014 edition was unveiled at last year's Detroit Auto Show boasting 550 horsepower from the brand's 4.8-liter twin-turbo V8, and it could hit 60 miles per hour in 4.3 seconds to a 175 mph top speed. Those seemed like very impressive specs for an SUV, but only a year later, the German brand has revealed an even more powerful take on its flagship trim in the model lineup. The 2015 Cayenne Turbo S now makes 562 horsepower and 590 pound-feet of torque from the same V8. The key to seeing such a significant boost in grunt so quickly is that the two turbos are now integral and are located directly in the exhaust manifolds. Porsche's eight-speed Tiptronic automatic gearbox still routes power to all four wheels. All of the tweaks let the SUV hit 60 miles per hour in 3.8 seconds and a 176 mph to speed. Stopping should come quite rapidly too thanks to 16.5-inch diameter ceramic brake discs up front with 10-piston calipers. Of course, the Cayenne needs to be able to put that added grunt to good use. Porsche claims that the model can lap the Nurburgring Nordschleife in 7:59.74. Comparatively, the 550-hp Land Rover Range Rover Sport SVR previously touted its SUV 'Ring lap record with a circuit in 8:14 in 2014. The Turbo S doesn't try hard to show off its added prowess, though. Up front, the bumper and undersides of the door mirrors are done in high-gloss black paint. Meanwhile, the roof spoiler and wheel arches are body color. The 21-inch wheels with black edges provide a little flash, and LED headlights are standard. The interior should be comfy too with black and creme leather and carbon fiber accents. The whole package rings up for $157,300, plus $995 destination and delivery, and US deliveries start in late April. Check it out in Porsche's video below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. The new Cayenne Turbo S The top athlete among SUVs At the 2015 North American International Auto Show in Detroit, Porsche is also introducing the new Cayenne Turbo S – the top model of the sporty SUV model series. Its re-engineered 4.8-liter V8 biturbo engine now develops 570 hp (419 kW) and 800 Nm (590 ft lb) of torque. A chassis that is tuned for maximum driving dynamics and packs a wide range of control systems also makes the Cayenne Turbo S a genuine top athlete.