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Weekly Recap: Porsche embarks on Mission E

Porsche's board of directors approved the company's first all-electric car Friday, signing off on production of the eye-catching Mission E concept that debuted in September at the Frankfurt Motor Show. It's set for launch by the end of the decade. The Frankfurt concept uses lithium-ion batteries to power two synchronous motors that create more than 600 horsepower and provide a range of 311 miles on the European cycle. It's capable of hitting 62 miles per hour in 3.5 seconds and can run the Nurburgring Nordschleife in less than eight minutes. In a statement, Porsche board chairman Oliver Blume called the Mission E the "beginning a new chapter in the history of the sports car." Porsche is backing that up with a roughly $1.1-billion investment that will create more than 1,000 jobs at its facilities in Zuffenhausen, Germany. The company will spend more than $760 million at its main site there to build a paint shop and a new assembly plant. It will also expand an engine factory to make electric motors. Porsche's renewed electric ambitions come as it grapples with fallout from parent company Volkswagen's diesel-emissions scandal. Porsche uses a VW diesel engine in the Cayenne SUV, which it stopped selling in November until a fix is found. Still, Mission E's scheduled landing could be as much as four years away – when Porsche and VW hope their diesel woes will be long over. The electric strategy is clearly a long play to provide its enthusiast owners with an efficient form of sport and luxury as fuel economy and emissions regulations tighten around the world. And if you still can't wrap your head around electric Porsches, the company also just announced plans to make the 911 Turbo and Turbo S even more powerful. Electric propulsion is part of Porsche's future, but for now at least, it isn't everything. OTHER NEWS VW sales crash 25 percent in November Finally, the other shoe dropped. Volkswagen sales plummeted 25 percent in November as fallout from the company's diesel-emissions scandal finally showed up on the sales charts. VW had managed to tread water with flat sales through September (the scandal broke more than halfway through the month) and October. The company stopped selling its 2.0-liter I4 and 3.0-liter V6 diesels as it works to make the engines complaint with emissions rules. VW admitted to rigging its diesel-powered cars so they could pass emissions tests in the United States and around the world.

Porsche 918 Spyder configurator goes live

That didn't take long. The debut model of the new Porsche 918 Spyder is still thronged by onlookers at the Frankfurt Motor Show, while the German sports car maker is hard at work putting the first version of the supercar's configuration page online. Considering Porsche configurators are some of our favorite time-wasters of the genre, we expect car-guy productivity to drop by a few percentage points over the rest of the day.
So, the 918 dream-maker doesn't list and prices as yet, and that's too bad. But considering the car is due to start off at $845,000 in the US, chances are good that unless you're reading this from the shallow end of your Uncle Scrooge-spec money pool, the cost of any part of the 918 is academic to you anyway.
To start, Porsche is offering twelve paint colors, three wheel choices and seven two-tone interior treatments. Standard lightweight bucket seats and a set of chairs with "firmer padding" are on offer, too. The options list is mostly populated with interior bits, though many - an anti-reflection interior, fire extinguisher, six-point seatbelts - are racing-oriented or functional. Note that Porsche is also kind enough to offer just one cupholder as an optional extra; the unit is made of aluminum and is detachable so that you won't have to carry the extra weight during racing. Also, Porsche probably puts you on some kind of naughty 'list' if you order one...

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.