2000 Chevrolet Blazer 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.

Chevy shows much-improved 2014 Corvette interior in new video

If you want a closer look at what went into designing and building the interior for the 2014 Chevrolet Corvette, we've got just the thing. General Motors has released a new video detailing the cabin's evolution from conception to execution, complete with commentary from Ryan Vaughn, performance car interior design manager with Chevrolet. The quick clip details how manufacturing, engineering and design within General Motors worked together from the first sketches to ensure no compromises had to be made later down the line. How novel.
With plenty of hides traced with contrast stitching and available real carbon fiber trim, the cabin looks to be a few hundred miles ahead of the C6. Given how readily critics derided the previous generation for its cabin, the C7 should make writers work a little harder to find something to complain about. Check out the video below for yourself.

Recharge Wrap-up: Chevy bi-fuel Silverado 3500HD Chassis Cab, VW Car-Net works with Apple Watch

Volkswagen's Car-Net app will be compatible with the Apple Watch. Using the app, owners will be able to lock and unlock their car, check charging status or fuel level, locate their car, flash the lights, and honk the horn of their vehicle remotely from their wrist. E-Golf owners can begin or end charging or operate climate control through their Apple Watch. The app can also monitor other household drivers with speed and boundary alerts - perfect for the parent who lends their car to a teenager. Read more in the press release from Volkswagen. Chevrolet is launching the bi-fuel 2016 Silverado 3500HD Chassis Cab. The work truck will now offer a version that will run on both gasoline and compressed natural gas (CNG). "CNG burns cleaner and costs less at the pump than gasoline, making it an appealing option for fleets," says GM's Ed Peper. Companies like Southern California Gas Co. find that trucks like this meet their work needs and help them achieve their goals of greening up their fleets, GM says. Read more in the press release from GM. UPS has made a deal to buy renewable natural gas from Clean Energy Fuels. This make UPS the biggest user of natural gas in the shipping industry. Clean Energy Fuels, co-founded by T. Boone Pickens, will provide UPS with its Redeem brand natural gas, which uses methane captured from landfills. UPS hopes to log 1 billion miles with its alternative fuel and advanced technology fleet by 2020. "Our rolling laboratory approach provides a unique opportunity for UPS to test different fuels and technologies," says Mitch Nichols of UPS. "Today's RNG agreement will help mature the market for this promising alternative fuel." Read more in the press release below. UPS BECOMES NATION'S LARGEST USER OF RENEWABLE NATURAL GAS IN SHIPPING INDUSTRY New Agreement with Clean Energy Will Help Grow Market for Use of Methane Gas from Landfills as Fuel Atlanta, May 5, 2015 – UPS® (NYSE:UPS) today announced it has entered into an agreement to purchase renewable natural gas (RNG) for its delivery vehicle fleet from Clean Energy Fuels Corp. (NASDAQ: CLNE). The deal signifies UPS's plan to significantly expand its use of renewable natural gas for its alternative fuel and advanced technology fleet. The company has a goal of driving one billion miles using its alternative fuel and advanced technology fleet by the end of 2017. Clean Energy Fuels, co-founded by T.