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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.

Porsche 911 Turbo and Nissan GT-R Nismo star in World's Greatest Drag Race 4

We love Motor Trend's annual World's Greatest Drag Race video. Now back for its fourth appearance, the idea of lining some of the world's fastest cars up for a ten-wide, straight-line, full-throttle run is, well... it's pretty freaking badass.
The lineup this year boasts some impressively fast cars to be sure. The group of ten includes the following darlings: Alfa Romeo 4C, BMW i8, BMW M4, Chevrolet Camaro Z/28, Ford Fiesta ST, Jaguar F-Type R Coupe, Nissan GT-R Nismo, Porsche 911 Turbo S, Subaru WRX STI and, last but not least, the Volkswagen GTI. Give us any one of those for the weekend, and we're happy to take the keys.
It must be said though, that for a publication that draws as much water as Motor Trend does, there are some big cars that we might expect to be here instead. The Lamborghini Huracán or Ferrari 458 Speciale would have added some exotic flare to the list, and the omissions of the Chevy Corvette Stingray (for the second year in a row) and the Dodge Challenger Hellcat are real head-scratchers.

Nissan CEO plans to deliver 'raw details of the misconduct' to Renault

TOKYO/PARIS — Nissan Motor's CEO plans to meet one-on-one with the deputy CEO of automaking partner Renault in Amsterdam this week, sources told Reuters, amid tensions over the future of the alliance after Chairman Carlos Ghosn's arrest last month. The meeting would be the first face-to-face interaction between Nissan's Hiroto Saikawa and Renault's Thierry Bollore since Ghosn was arrested on Nov. 19 in Tokyo. It would take place alongside regular top-level, monthly talks between the partners and Mitsubishi Motor Corp that will be held over two days from Tuesday, according to one of the sources familiar with the matter. Saikawa, who took over from Ghosn as CEO last year, is planning to discuss at the meeting with Bollore possible changes to the partnership's management and operations with an eye to continuing the alliance, another source who is close to Nissan's management said. The talks in Amsterdam could provide Saikawa with an opportunity to try and convince Renault executives of the gravity of Ghosn's alleged misconduct discovered during an in-house investigation by the Japanese automaker. They are being held a day after Saikawa rebuffed a demand from Renault for an extraordinary shareholder meeting that would have offered the French car maker a chance to weigh in on Ghosn's replacement as chairman and on other Nissan board appointments. Mitsubishi Chairman Osamu Masuko said late on Monday he will attend the Amsterdam meetings via video conference. A Nissan spokesman said Saikawa would attend meetings with alliance partners in Amsterdam from Tuesday, but declined to comment on the possibility of the one-on-one meeting with Bollore. Ghosn was charged last week alongside alleged accomplice Greg Kelly and Nissan itself over the company's failure to declare $43 million in deferred income that Ghosn had arranged to be paid while chairman and CEO. Both men remain in custody. The scandal has shaken the Renault-Nissan-Mitsubishi alliance, with Saikawa calling for changes to weaken Renault's control as he moved to oust Ghosn in the week of his arrest. Renault directors were briefed last week on the Nissan investigation that led to Ghosn's arrest but reiterated their earlier decision to keep him in office as chairman and CEO. But the Renault board has yet to be given direct access to Nissan's findings, which are being closely held by Renault lawyers answering to Ghosn's long-standing chief of staff and head of legal affairs at Renault, Mouna Sepehri.