2006 Porsche Cayenne S Leather Sunroof on 2040-cars

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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.

Jay Leno's Dodge Challenger raises $585k for USO in Scottsdale

Of all the metal moved in Scottsdale, AZ, this holiday weekend, the one you see here was hardly the most expensive. But it's noteworthy for another reason: despite being a relatively humble, second-hand 2008 Dodge Challenger SRT8, raised an impressive $565,625. That's because, first of all, it belonged to Jay Leno, and secondly because the proceeds were going to the USO. Leno donated the modern muscle car from his collection to benefit our men and women in uniform, and was on hand to present the car on stage at the Gooding & Company auction, along with USO president J.D. Crouch II and former Army chief of staff General George W. Casey, Jr. After frenzied and patriotic bidding, the gavel ultimately dropped at $360,000, accompanied by over $200,000 in additional contributions, bringing the total amount donated to the USO to over half a million. Commendable though it was, of course the Challenger didn't garner the highest bids at the auction. A 1959 Ferrari 250 GT LWB California Spider sold for $7.7 million and a 1968 Ferrari 330 GTS fetched $2.4 million. A rare 1962 Ferrari 400 Superamerica Series I Coupe Aerodinamico sold for over $4,070,000 – which, according to Sports Car Market, is the most ever paid at auction for a 400 Superamerica. And a 1966 Porsche 906 Carrera 6 also sold for a record $1.98 million. Featured Gallery Gooding Scottsdale 2015 News Source: Gooding & CompanyImage Credit: Jensen Sutta, Mike Maez/Gooding Celebrities Dodge Ferrari Porsche Auctions Classics dodge challenger srt8 gooding ferrari 400 superamerica

Jeep Wrangler EcoDiesel, Porsche Cayenne E-Hybrid and Tesla Cybertruck | Autoblog Podcast #606

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor, Green, John Beltz Snyder and Associate Editor, Joel Stocksdale. With their powers combined, they create a great episode full of driving impressions from the Jeep Wrangler EcoDiesel, Porsche Cayenne E-Hybrid and BMW X6 40i. They return to the topic of the Ford Mustang Mach-E before diving into the Tesla Cybertruck and a future without Buick sedans. Finally, they help a listener choose a new, sporty sedan in the "Spend My Money" segment. Autoblog Podcast #606 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving: 2020 Jeep Wrangler EcoDiesel 2019 Porsche Cayenne E-Hybrid 2020 BMW X6 40i Ford Mustang Mach-E (Watch the ride-along here) Tesla Cybertruck Bye to Buick sedans Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: