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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.

400,000 Chevy, GMC pickups recalled: Side airbags can explode

DETROIT — General Motors is recalling more than 400,000 pickup trucks in the U.S. because the side airbags can explode without warning and spew parts into the cabin. The recall covers certain 2015 and 2016 Chevrolet Silverado and GMC Sierra 1500, 2500, and 3500 trucks. Documents posted Friday by U.S. safety regulators say the airbag inflator can rupture or the end cap can fly off on both sides of the trucks. Documents say three inflators ruptured in 2015 Silverados last month, one in Florida and two in Texas. All three trucks were unoccupied at the time, and GM says it has no reports of injuries. Dealers will replace both side airbag modules. The company says it has a limited number of replacement parts available. Owners will be notified starting Aug. 16 and they'll get a second letter when parts are widely available. About 9,000 of the trucks were recalled last year for the same problem. The company says a manufacturing defect allowed moisture into the inflator while it was being manufactured, causing corrosion. The inflators were made in Mexico by Joyson Safety Systems, the company that took over Takata. Back in April, Silverado and Sierra were among nearly 750,000 GM vehicles in a National Highway Traffic Safety Administration (NHTSA) investigation into non-deploying driver-side airbags. That investigation is ongoing. Takata is responsible for the largest recalls in automotive history, covering about 100 million inflators among 19 major automakers worldwide, including about 67 million inflators in the United States. Nineteen deaths in the U.S. have been attributed to Takata inflators. Only about 50 million of the 67 million recalled inflators in the U.S. have been repaired. This latest recall is a good reminder to go to NHTSA's recalls website and enter your car's VIN. Millions of recalled vehicles still pose a danger to their owners. Yours could be one of them.   Recalls Chevrolet GM GMC airbag Takata airbag recall

Seventies super-salesman challenges new car-sales record

Some of the fondest memories from my youth were the Sunday afternoons spent walking between rows of new and used cars. This preceded the advent of widely available internet, so the cars didn't sell themselves online: A tentative buyer had to come see the cars in the metal, with old-school salesmen taking well-earned smoke breaks after putting someone behind the wheel of a new Saab 900. All-inclusive subscription services were unheard of. If you open a Guinness records book and look up car salesmen, you'll find Joe Girard. The definitely old-school Detroit salesman regularly sold over 1,000 new cars per year, with a particular high point of 1,425 cars in 1973 guaranteeing him a mention in the Guinness book. To reach that kind of sales figure, you had to be a pretty special salesman, and Girard was. He didn't take breaks unless absolutely necessary, and even his lunch hours were dedicated to selling more cars instead of shooting the breeze with other sales persons. By 1977 he was worn through, having sold over 13,000 cars in his career, and his physique couldn't take it anymore. He's been a motivational speaker since. Now, 44 years later, a Dearborn, Mich., Cadillac and Chevrolet salesman named Ali Reda has reportedly broken Girard's record. The books at Les Stanford Chevrolet Cadillac say Reda sold 1,530 new cars and 52 used cars in 2017, averaging 130 vehicles per month. But after Girard, 89, heard of the sales record, he called his attorney, not letting his record be broken without a fight — or at least an audit. The Dearborn dealer isn't too concerned about Girard's doubts, at least according to Gary Stanford, whose father founded the dealership. "It's very official, trust me," said Stanford to the Detroit Free Press. "Ali is the hardest worker I've ever seen. And if someone doesn't believe the data, well, they're more than welcome to consult with GM. It's all there in black and white." What Girard doesn't get is that Reda was honoring him with the accomplishment. "I read his book, 'How to Sell Anything to Anybody,' and it said it would teach you how to become the best," said Reda, who at age 44 was a newborn when Girard hit his peak. "He's an absolute legend in the industry. Your whole career, you're chasing his name.