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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.

Recharge Wrap-up: drifting Nissan Leaf video, BMW i sponsors Formula E Berlin ePrix

Watch a Nissan Leaf drift. The folks at Autocar got their hands on Nissan's otherwise tame electric vehicle with a set of plastic rear tires, and got it sideways at the British Drift Championship. If that sounds ridiculous, well, it is, but it's also enormously entertaining. If it sounds particularly tricky to pull off in the front-drive EV, yeah, it's that, too. Check it out the drifting Leaf in the video above, and read more commentary at Hybrid Cars. BMW's i division is the title sponsor of the 2016 Formula E Berlin ePrix. The German automaker, which has already put the i8 and i3 to work as safety and medical cars for the electric racing series, is "delighted to be prominently represented with BMW i at the race weekend in the German capital," according to Joerg Reimann, BMW's Vice President of Brand Experience. The 2016 FIA Formula E BMW i Berlin ePrix - as it is now officially titled - takes place on May 21. Read more from Formula E. A Hawaiian biodiesel plant is the first in the US to be certified as sustainable. Pacific Biodiesel's Big Island Biodiesel plant gets its certification from the Sustainable Biodiesel Alliance, covering both the plant's production and distribution of the alternative fuel. The facility uses waste oil, including used cooking oil, to produce its fuel. The certification system is designed to help worthy biofuel producers show that their processes and products are more than just greenwashing. Read more at Utility Dive, or from The New York Times. India's KPIT Technologies has earned the Promising Innovation in Transport Award at the 2016 Summit of the International Transport Forum in Leipzig, Germany. KPIT earned the special recognition for its system to convert diesel buses to all-electric power. The company's retrofits can be applied to a wide variety of bus platforms. Read more at Green Car Congress.

Carlos Ghosn, a year after arrest, still seeks trial date and access to evidence

TOKYO — A year after his arrest, Nissan ex-Chairman Carlos Ghosn remains stuck in Tokyo under stringent bail conditions and without a trial date as he seeks access to a trove of Nissan emails and other evidence to fight charges of financial misconduct. His lawyers have asked a court to grant access to 6,000 pieces of evidence collected from Nissan such as electronic communications, which they say is crucial for a fair trial, showed an Oct. 4 court filing seen by Reuters. The once-feted executive has spent 129 days in detention since his arrest shortly after his private jet touched down at a Tokyo airport on Nov. 19, 2018. He faces four charges — which he denies — including hiding income and enriching himself through payments to dealerships in the Middle East. Nissan sacked Ghosn, saying its internal investigations revealed misconduct ranging from understating his salary while he was its chief executive, and transferring $5 million of Nissan funds to an account in which he had an interest. An earlier court ruling allowed prosecutors to hand back evidence to Nissan during pretrial wrangling over witnesses and evidence similar to the U. S. discovery process. If prosecutors are "given the freedom to unilaterally delete the collected evidence and return it to relevant parties, this is equivalent to granting the investigative agencies the right to destroy evidence," showed the filing to the Tokyo District Court. The lawyers also asked the court to rescind the earlier ruling, saying some evidence could be erased by Nissan to protect confidential business information. They argued the "ruling deprives Mr. Ghosn of his right to receive a fair public trial by an impartial court," as it enabled prosecutors to view and use the evidence and withhold it from the defense. Prosecutors are not required to hand over all evidence they or the police gather during investigations unless ordered by the court, unlike in the U.S. discovery process where prosecutors and defense lawyers disclose the evidence they intend to present in court. A spokeswoman for the Tokyo prosecutors' office said the office could not comment on individual cases. A Nissan spokeswoman declined to comment. Ghosn's lawyers have also asked the court to dismiss all charges against him, accusing prosecutors of colluding with government officials and Nissan executives to oust him to block any takeover of the automaker by French alliance partner Renault SA, of which Ghosn was also chairman.