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Porsche 911 Aerodynamic prototype cheated the wind ahead of its time

You might think that sports cars would have the lowest drag coefficient of all cars. And yes, they do tend to be more slippery than, say, SUVs or convertibles, but the sleekest vehicles on the road tend to be EVs, hybrids and luxury sedans. Sports cars, on the other hand, have aerodynamically detrimental needs for downforce and additional engine cooling. Still, the Porsche 911 is better than most, and has only gotten more so over the years. Its relatively narrow track and compact form mean it has a smaller frontal area than some other sports cars, and the gradual sweeping back of its headlights and windshield have only augmented its capacity for cheating the wind.
This 911 prototype, however, is even more aerodynamic than most. It's based on a "G model" 911 from 1984, but employed such features as covered wheels, a new rear spoiler and a reprofiled front end to drop its drag coefficient from 0.40 to 0.27, making it as slippery as a modern sedan and better at cheating the wind than just about anything built up to that point, save for maybe the Tatra 77, Citroën SM or Tucker Torpedo.
Elements of this prototype ended up gradually making it into production Porsches for years to come, and you can clearly see early influences on the second-generation 964 and even on the 959. It's featured here as the latest installment in a video series on rare historic Porsches unearthed from the company archives, following previous clips that featured a rare V8-powered 911 and a mid-engined 911 prototype. Scope out the latest episode in the video below.

Weekly Recap: Mercedes continues the pseudo-coupe craze with AMG-tuned CUV

But as BMW's X6 has demonstrated, sport sells in in the crossover segment, and Mercedes is giving the people what they want. BMW proved there is a market for crossover utility vehicles designed to look like coupes – as much as a vehicle with four doors and noticeable ground clearance can look like a coupe, anyway. Now comes the reply from Mercedes-Benz: the GLE Coupe. The rakish crossover is a harbinger of things to come from Mercedes, as it begins the company's transition to a new nomenclature and marks the debut of the AMG Sport line. It also continues the recent coupe craze. Designers from many automakers, like Nissan and Volkswagen, have increasingly turned to swoopy, dramatic styling to make utility vehicles and sedans seem more desirable. By revealing the GLE 450 AMG Sport model first, Mercedes is clearly hoping to cast the GLE Coupe as a sportier, lifestyle-oriented alternative in its lineup of beefy crossovers and SUVs. Mercedes used the word "sport," or a variation of it, 53 times in its press release, so uh yeah, it's sporty. It's not an empty promise: Benz means business with the AMG Sport line. This GLE Coupe gets a 3.0-liter biturbo V6 rated at 362 horsepower and 384 pound-feet of torque paired with Mercedes' new nine-speed automatic transmission, and it runs with 4Matic all-wheel drive. Specs on the other GLE Coupe models were not disclosed. But as BMW's X6 has demonstrated, sport sells in in the crossover segment, and Mercedes is giving the people what they want. After all, more than 260,000 people have bought X6s since 2008, and Mercedes wants a piece of that. From certain angles, the GLE Coupe even looks vaguely like an X6. "This is really a vehicle that is all about status," said Dave Sullivan, product analysis manager for research firm AutoPacific. "You can buy a SUV that doesn't have the inherent qualities of a SUV, such as cargo hauling. People will likely be drawn to the looks. Coupes are all the rage." BMW, however, isn't running from the fight, and the updated 2015 X6 is arriving in showrooms this month. It also added a smaller sibling, the X4, to its coupe-crossover stable in July. The GLE Coupe arrives next year, though Mercedes hasn't specified exactly when it will hit showrooms from the factory in Alabama, or specified details on the rest of the non-AMG Sport models. In 2008, it was surprising the X6 was a hit. In 2015, it will be even more surprising if the GLE Coupe isn't.

Porsche reportedly working on new turbocharged flat-four boxer engine?

These days, we've seen just about every automaker dropping cylinders in an effort to appease tightening fuel economy and emission standards - and Porsche is no exception. Nearly three years after introducing an all-new V6 powerplant under the front hood of its Panamera sedan (launched with a range of V8 engines) comes word that Porsche is working on an all-new turbocharged flat-four boxer to replace the flat-six engines mid-mounted in its Cayman and Boxster models.
Specifics have yet to be learned, but reports say the engine is a derivative of the current 3.8-liter six (shown above) found under the rear decklid of the Carrera S, yet with two fewer cylinders. Fitted with a turbocharger, direct-injection and the automaker's VarioCam Plus, the new all-aluminum 2.5-liter flat-four will likely develop upwards of 350 horsepower and 360 pound-feet of torque. Redline should be about 7,500 rpm. Initial indications say that Porsche will only offer the new engine with its seven-speed PDK dual-clutch automatic, tuned to take advantage of the low-end torque, but a traditional six-speed manual gearbox has not been ruled out. Despite the loss of two cylinders, enthusiasts will likely embrace the new engine as it promises to be lighter, more fuel efficient and more powerful than the 2.7-liter and 3.4-liter sixes in the Cayman/Boxster today.
Even though Porsche has been using Volkswagen Group engines for years (e.g., Cayenne V6, Cayenne Diesel and upcoming Macan), all indications are that the new flat-four will not be shared. Instead, it will be kept in-house for the automaker's sports cars and possible future fitment in an entry-level 911.