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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.

BMW gets exemption to allow self-parking 7 Series in US [w/video]

The US-spec 2016 BMW 7 Series is gorged with enough technology for it to qualify as a finalist in our Technology of the Year award. But not all of the tricky bits found on the European-spec car are offered Stateside, like the automated Park Assistant Plus that lets a driver remotely move the car into and out of a parking space using the touchscreen keyfob. The reason is Section S5.3 of Standard No. 114 of the Federal Motor Vehicle Safety Standards, which dictates that "the service brake... be depressed before the transmission can be shifted out of park.'" Since Park Assistant Plus is remote controlled, the brake pedal isn't pressed when the car shifts from Park into a gear. Automobile reports that the National Highway Traffic Safety Administration has conceded the law is too vague, and granted BMW's request for an exemption to bring the convenience feature to the US. NHTSA said that the point of the law was to have brake actuation during the transition from Park to a forward or reverse gear, not to insist that someone actually presses the brake pedal. BMW said it plans to bring Park Assistant Plus to the US soon, but the carmaker doesn't yet have a firm timeline for the move. To us that seems like a small yet significant victory as the marketplace fills up with cars that have abilities beyond the current laws to manage. Now if we could just get that whole FMVSS headlight issues worked out and enjoy some of that tasty Matrix and MultiBeam lighting. You can watch a video of the BMW system in action in the video below.

BMW expounds on i8 design and performance in new videos

At this point, there isn't much we don't know about the 2015 BMW i8, so BMW is starting to focus its attention on reassuring consumers that the future of BMW won't abandon the past. In these two recently released videos, BMW answers questions prospective buyers might have about about the new model's design and performance.
In the design video, BMW explains how the i8's styling is intended to be practical, with aerodynamics and fuel efficiency in mind, yet still have a sporty and dynamic look. The performance video aims to show that the plug-in hybrid can be fuel efficient while still delivering plenty of performance, and it shows an animation about how the i8's drive systems work together. Scroll down to watch both videos on this bold green supercar.