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Nissan Leaf has outsold Chevy Volt by 50% so far in 2015

We know, we know. The Chevy Volt and Nissan Leaf sales numbers for mid- to late-2015 aren't all that meaningful because of the impending arrival of the next-gen Volt and the expected but not-yet-totally-confirmed debut of the second version of the Leaf. Nonetheless, tracking the sales of the first two major plug-in vehicles is something that remains interesting to us, if for nothing else that the all-electric Leaf remains slightly more popular than the plug-in hybrid Volt after all this time. If we just look at August, the numbers were basically tied in the US. Chevy sold 1,380 Volts while Nissan moved 1,393 Leafs. But when we take a 10,000-foot view, the differences starts to appear. So far in 2015, GM has sold 8,315 Chevy Volts while Nissan has sold 12,383 Leafs. That means that the Nissan has outsold the Chevy by around 50 percent (to be specific, it's 48.92 percent). Since the two vehicles went on sale in the US at roughly the same time at the end of 2010, 81,672 Volts have been sold, compared to 84,705 Leafs. That's a difference of only 3,033 vehicles, so proponents of both powertrains can hold their heads high. Looking just at last month, Volt sales were 45 percent lower compared to August 2014. So far this year, Volt sales are down 36.7 percent. The Leaf didn't fare any better. Month-to-month, Leaf sales were down 43.7 percent in August, while year-to-date, Leaf sales are down 65.3 percent. Those second-gen models can't come soon enough. As always, we'll have our broader wrap-up of monthly green car sales for August up soon. Stay tuned. Green Chevrolet Nissan Electric Hybrid ev sales

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 updates Silverado HD with new towing equipment

Enamored by the updated Chevy Silverado released just the other day, but need something a little more heavy duty? Chevy isn't going to keep you around waiting for long, as it has now revealed a new Silverado HD as well. While the new Silverado 1500-series has been distinguished over the outgoing version principally by its revised styling, the updated Silverado HD is more about its enhanced equipment. It's got a new Digital Steering Assist system (on some models) designed to enable easier and safer towing. There's a new gooseneck/5th-wheel trailer prep package that enables Chevy's new heavy duty truck to tow as much as 23,200 pounds. And the interior equipment is augmented as well by a new MyLink system with seven- or available eight-inch display, Apple CarPlay and Android Auto capability, wireless phone charging and more. Buyers will be able to choose between two versions (2500HD and 3500HD), four trim levels, three cab sizes, two cargo box lengths, and numerous powertrain and drivetrain configurations for a staggering array of combinations. There'll also be several special editions and packages, like the Z71 for off-road use and Custom Sport Edition for a sleeker look, as well as chassis cab and CNG versions. Scope out the full details in the press release below and the fresh batch of images in the gallery above. Related Video: 2016 Chevy Silverado HD Offers Digital Steering Assist Control-enhancing system, phone integration and 5th wheel package lead updates 2015-09-24 DETROIT – Chevrolet Silverado HD trucks are engineered to make the toughest jobs easier, and new technologies for 2016 complement features such as integrated cruise control, powertrain grade braking and diesel exhaust braking to enhance control. New Digital Steering Assist power steering on some double cab and crew cab models helps make hauling and trailering easier and more confident, with electronic controls that enhance road holding and stability on the highway – particularly on crowned roads – regardless of whether the truck is loaded. It also offers greater responsiveness and an improved steering feel. Digital Steering Assist is not available on Work Truck models or regular cab. There's also a new Gooseneck/5th Wheel Trailering Prep Package, with a spray-in bedliner, that makes Silverado HD models ready to tow larger trailers right from the factory.