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2014 Nissan Frontier Diesel Mule [w/poll]

Last August, Nissan shook the truck world when it officially announced plans to source a diesel option from Cummins for its long-overdue Titan replacement, its full-size pickup that's slated to drop this January at the Detroit Auto Show. The 5.0-liter V8 turbodiesel is expected to make somewhere around 300 horsepower and north of 500 pound-feet of torque. This combination of an all-new truck with this new powerplant promises to dramatically change the competitive landscape, splitting the difference between the heavy-duty goliaths from the Detroit Three and the Ram 1500 Ecodiesel. And the intrigue moved a step further when the Frontier Diesel Runner Concept showed up at February's Chicago Auto Show, as it displayed a growing relationship between Nissan and Cummins in a very interesting potential future product.
That concept would melt its clear acrylic hood if the engine ran too long, but this month, we got a chance to test drive a production mule, an otherwise normal Frontier with a Cummins 2.8-liter diesel four-pot under the hood and a ZF eight-speed automatic changing gears. The powertrain figures to be a direct competitor to the 2.8-liter Duramax promised for General Motors' Chevrolet Colorado and GMC Canyon twins, but will Nissan build it? All signs point to probably. Officially, Nissan is taking no position on the future of this program, but a concept followed by putting journalists into a test mule suggests the company is considering the option very seriously. Here's what we gleaned from a brief drive around the posh suburbs of Nashville:
Before we get too deep into this Quick Spin, realize this Frontier is absolutely a mule, not a prototype. More or less cobbled together with duct tape and baling wire, it's not meant to be representative of a finished product, or even a started product. The transmission and shifter is straight out of a Chrysler 300 and the shifter surround is cut out of a panel of plastic. The "Low Sulfur Diesel Only" sticker is, well, just stuck on. We're looking at a "What if?" mockup.

Nissan ZEOD RC stretches its legs for the first time

Ever see one of those videos where a baby deer is born and immediately starts walking? Well, this isn't one of those. For starters, the Nissan ZEOD RC isn't exactly a newborn. Nissan took the design of the DeltaWing, gave it a hybrid engine and called it something new. And it hardly started galloping straight out the box, either: this was just a low-speed demonstration run, held at Fuji Speedway where it debuted this past weekend.
Still, seeing the car that's destined to take the first lap of Le Mans under electric power alone actually start up and run is something of a landmark in the development of electric racing cars - even if this is, despite Nissan's best efforts to avoid the term, a hybrid, not a pure EV. The name stands for Zero Emissions On Demand, not zero emissions all the time. But then ZEATT wouldn't make for a very good name anyway, would it? See for yourself in the video below.

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.