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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.

Since 2010, Chevy Volt has outsold Nissan Leaf by just two units

The first two plug-in vehicles from major automakers in the US were the Chevy Volt and the Nissan Leaf. Ever since they went on sale to much fanfare in late 2010, we've been tracking the monthly sales with great interest (and, of course, other green vehicle sales as well). After a big initial lead by the Volt – the Volt outsold the Leaf 23,461 to 9,819 in 2012 – the Leaf has been chugging along and outsold the Volt every month since November 2013. We knew that the cumulative totals would soon tip in favor of the Leaf, but for at least one more month, the Volt is going to be able to say its the most popular plug-in vehicle in the US. Overall, for all officially reported sales of the Leaf and the Volt, things are almost exactly tied. Since the vehicles went on sale in the end of 2010 until the end of February 2015, the Volt has sold 74,592 units and the Leaf has sold ... drumroll please ... 74,590 units. For February, Leaf sales totaled 1,198 units, a 17-percent drop from the 1,425 Leafs sold last February. Brendan Jones, Nissan's director of Electric Vehicle Sales and Infrastructure, said in a statement that, "Tough winter weather in several key markets held EV sales back in February. As we head into spring, we look forward to seeing more dealership traffic so shoppers can experience firsthand the benefits of the all-electric Nissan Leaf." Of course, it was cold in the US last February, too, but we're sure that the nasty weather did indeed play a role last month. Things were even worse for the Chevy Volt, which dropped to just 693 copies sold, down 47 percent from the 1,210 sold last year. That's just barely enough for Chevy to keep talking about its plug-in sales leadership, but we expect the message to change once the March numbers come out next month. Related Video:

Forza Motorsport 6's new drivable Hot Wheels cars are the best

Each month, Turn 10 Studios releases a new car pack for the latest installment of its Forza Motorsport video game. Sometimes that means less-than-exciting stuff coming to our Xbox Ones – BMW X6M, bleh – but this time our inner seven-year-old is beyond ecstatic. Two of the seven cars are based on actual Hot Wheels models. And. They're. Awesome. First we have the 2011 Hot Wheels Bone Shaker. Yes, there are flames on the side. And yes, there's a giant skull where the grille should be. This one came from the imagination of "Mr. Hot Wheels" Larry Wood, whose design was so popular it inspired an actual real-world creation. Like all good things in this world, it's powered by a small-block Chevy V8. Oh, and it has no roof. This will be a popular one among gamers. The other digitized Hot Wheels creation is a 2005 Ford Mustang. A modest vehicle, sure, but the toy designers have festooned this pony car with a wild paint scheme and the body mods to emphasize it. Originally developed to celebrate the 'Stang's 50th birthday, this Hot Wheels car trades Americana for wild Japanese style. There's just one functioning life-size version of this car in existence as well, but if you look hard, you might be able to find one of the 1:64 scale models that inspired it. Other highlights from this month's car pack include the latest Ford Focus RS – finally time to replace that NASCAR-V8-powered, all-wheel-drive 2009 Focus RS – the 2015 McLaren P1 GTR, the 2016 Chevrolet Camaro SS, the aforementioned X6M, and Alain Prost's 1990 Ferrari 641 F1 car. The Hot Wheels Car Pack is available for download today. Related Video: Featured Gallery Forza Motorsport 6: Hot Wheels Car Pack News Source: Turn 10 Studios via YouTube Toys/Games BMW Chevrolet Ferrari Ford McLaren Racing Vehicles Performance video games Hot Wheels forza motorsport chevy camaro ss forza motorsport 6