2008 Nissan Altima Base Sedan 4-door 2.5sl 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.

Nissan Cube dead for 2015

Another class cut-up has graduated from our motor pool. The Nissan Cube's indefatigable weirdness was likely both its chief selling point and its Achilles Heel, but Autoblog sources say that after a six-year run in the US, the niche player has been scrubbed from the Japanese automaker's lineup.
The move is hardly unexpected - there was confirmation from Nissan Canada that it was pulling the plug on the asymmetric little front-driver in its market back in May, and sales have not exactly been sparkling here in the States, either. In June, Nissan shifted just 336 Cubes, down 23.8 percent year over year. So far this year, Nissan has sold 2,294 units, a sales pace off 30.9 percent versus 2013. At its peak in 2010, the Cube remained firmly a niche vehicle, selling 22,968 units.
Nissan North America's Dan Passe, senior manager of product communications, maintains that "We are continuing to sell the 2014 Cube and we haven't made an announcement about future model plans," but Autoblog sources indicate that an official announcement will be coming in the next couple of months, and the Cube has been conspicuously left off of an exhaustive 2015 lineup "Charting the Changes" announcement released on Tuesday.

Watch Nissan's autonomous Leaf in action

Getting its semi-autonomous Leaf legalized in Japan was just the first step. Now, Nissan is giving demonstrations of what its fully autonomous car is capable of at this year's Combined Exhibition of Advanced Technologies (CEATEC) show - Japan's equivalent to America's Consumer Electronics Show. To show off the possibilities of its technologies, Nissan had an oval track set up at the show giving rides in an autonomous Leaf to the media. Even Nissan CEO Carlos Ghosn and Toyota CEO Akio Toyodo caught a ride.
Nissan has since released a couple videos of its CEATEC demos, with one designed to look like a news report. In this video, you can watch the car go around the track and navigate intersections and road hazards. The second video shows Ghosn riding in the car, and he hints that Nissan's goal of having an autonomous vehicle in production by 2020 might be more of a worst-case scenario. Watch both videos and read through Nissan's official press release below.