2006 Bmw M6 Base Coupe 2-door 5.0l No Reserve 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.

Recharge Wrap-up: Nissan and Endesa launch V2G project; BMW denies Apple will use i3

Nissan and Endesa will work together to deliver a mass-market vehicle-to-grid (V2G) system. The technology would allow users to charge their vehicle during off-peak hours, and sell energy back to the grid during periods of high demand. The two companies are looking to launch V2G technology in Europe, as well as exploring second-life projects using retired EV batteries for stationary energy storage. V2G allows users to lower the cost of ownership of their EV, and also helps stabilize the grid, particularly in countries that use a large amount of renewable energy. Endesa will demonstrate its V2G technology system in Madrid on March 12. Read more from Nissan. BMW denies reports that Apple will build a car based on the i3. German magazine Auto Motor und Sport said that such a deal was in the works, and that the Apple car could be sold by Apple and serviced by BMW. "We are in regular talks with companies from the IT and telecommunications sector, including Apple, concerning topics like connected vehicles," says BMW. "Developing or building a car is not a topic of these discussions." Anonymous sources say that Apple could have a car available for production in 2020. Read more at Automotive News Europe. BluepointLondon will take over the management of 60 EV charging stations from Transport for London. The 60 chargers are in the boroughs of Southwark and Sutton, and Bluepoint expects to take over management of charging infrastructure in other London boroughs as well. "A better maintained and more extensive charging infrastructure will mean more drivers are able to use electric vehicles and join the early-adopters who are already helping London reach lower emissions level," says BluepointLondon Director Christophe Arnaud. "We are very excited to be playing our part." BluepointLondon aims to manage 6,000 charging points in London by 2018. Read more in the press release below. Efficient Drivetrains, Inc. (EDI) offers plug-in hybrid conversions for GM light-duty trucks. The PHEV drivetrain offers all the performance of the original model, but reduces consumption and emissions by as much as 80 percent. It offers 30 to 40 miles of all-electric range plus enough energy to act as an idle-free power supply for tools and the like without depleting range. The EDI drivetrain can even be used to charge other EVs. Says EDI's Charlie Travis, "The light duty truck class is an important and high-volume vehicle category for fleet owners.

2017 BMW Alpina B7 xDrive is an M7 by any other name

Have you been waiting for BMW to release a more potent version of the new 7 Series? Try 600 horsepower on for size and forget all about the famous M badge. The new flagship performance sedan from Munich is the 2017 BMW Alpina B7 xDrive. Alpina is Bimmer's tuner of choice, and it designs customized features to integrate precisely with the factory build. The B7's 4.4-liter twin-turbocharged V8 is massaged to deliver a nice, round 600 horsepower, and a torque figure nearly as impressive at 590 pound-feet available from just 3,000 rpm. All that muscle is channeled through an eight-speed automatic to all four wheels (as you might have guessed from the new xDrive handle). The result is an Autobahn-blitzing 0-60 time quoted at just 3.6 seconds – 0.8 seconds quicker than its predecessor – and a top speed estimated at 193 miles per hour. Those would have been considered supercar figures not that long ago, but are delivered here in a luxury sedan as big as they come. They also stand up pretty well to the forced-induction eight-cylinder competition in the Audi S8 Plus, Jaguar XJR, Maserati Quattroporte GTS, and Mercedes-AMG S63. The Audi produces a bit more power but less torque, the Mercedes does the opposite, and the Jaguar and Maserati are left in the dust. Only the S8 Plus dares claim a quicker 0-60 time, and even then it's only said to be a tenth quicker. (The Mercedes-AMG S65 boasts much higher output from its V12, but without an all-wheel drive system capable of handling all its muscle, it's a fair bit slower off the line.) Keeping all that momentum under control is an air suspension with adaptive dampers, active roll bars, and four-wheel steering. It's all mounted to 20-inch wheels wearing Michelin Pilot Super Sport rubber and packing oversized brakes measuring 15.5 inches at the front (with four-piston fixed calipers) and 14.5 inches (with floating calipers) at the back. Of course it also benefits from all the advancements that the Bavarian automaker developed for the latest 7 Series, but takes things a step further with a specific aero kit and an interior decked out in even more upscale leather and trim. The finished product may not wear an M7 badge as so many have called for from BMW's flagship sedan series over the years. But the Alpina name carries a cachet all its own and has for the past 50 years now – which is a few years longer than BMW M GmbH has been around.