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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.

Hamann Porsche Macan S Diesel promises more performance, questionable looks

Ignore the Gulf Oil livery for a minute (we know, it's hard). What we have under the blue-and-orange paint scheme is a diesel-powered Porsche Macan S, which is fascinating enough in and of itself. But this particular example has been upgraded by the folks at Hamann, for that added bit of oomph. Power output from the 3.0-liter V6 diesel is up from 258 horsepower to 300 hp. We buy diesels for torque, though, so it's the 494 pound-feet, up from 427 lb-ft, that really gets us excited about this modded Porsche. Taken together, the Hamann Macan S Diesel can hit 60 miles per hour in a decidedly un-diesel-like 5.7 seconds, down from 6.1 seconds. German tuners like Hamann are not known for their subtlety, of course, so beyond the power ugprades, the company has made its own aesthetic tweaks. The new body kit is, um, aggressive? Okay, it's really not very nice to look at. The Macan is a handsome vehicle on its own, but Hamann's efforts haven't done it any favors. It's extremely busy, particularly around the front and rear ends, where the tuning company's efforts seem focused. We're guessing some attention has been paid to the cabin, although it's impossible to tell on the Geneva show car, which has had all of its windows heavily tinted. Here's hoping any changes to Macan's cleanly styled cabin are kept to a minimum. Take a look at our full crop of live photos of the modded Macan, direct from the floors of the Geneva Motor Show. High-performance power, long-distance comfort, extravagance: the benchmark figures of the formidable Porsche Macan S Diesel are impressive. For all fans of the dynamic vehicle Hamann's tuning experts now sets the bar even higher. As is generally known, the model's name "Macan" was derived from the Indonesian word for tiger – and exactly this tiger Hamann frees from the ties of a series actor. The face of the Macan, which Hamann presents in the S Diesel version in Geneva, has self-confident traits. The tiger seems ready to jump – an effect achieved by the low line of the front apron and the lowering of the car. Hamann's aerodynamics attachment emphasises the sharp "teeth" of the Macan Turbo's standard front and sets distinctive accents. The car refiner's interpretation of the Macan S Diesel appears well-toned and is coherently continued in powerfully shaped wing extensions making the predator's body grow by twelve centimetres in width.

Watch 1,208 Porsche 911s collect at Silverstone for world record

Porsche has been spending the majority of 2013 celebrating the 50th birthday of the 911, with its latest stunt taking the German brand to the home of British motorsports, Silverstone. To celebrate, Porsche invited enthusiasts to take their personal 911s on a lap of the former airfield, and boy, did the Porschephiles show up. 1,208 911s took part in the lap around the Grand Prix circuit, making it the largest-ever gathering of the iconic, rear-engined cars.
This wasn't just a celebration of 50 years for the 911, though. Funds raised were channeled towards Hope For Tomorrow, a cancer charity that works with the United Kingdom's National Health Service in operating mobile chemothereapy units that make life just a little bit easier on cancer patients.
Take a look at the long video below, and enjoy the passing of what are likely examples of every 911 model ever built.