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Cruze Diesel Road Trip reveals the good and bad, but no ugly

Most of us have strong opinions on diesel-powered cars based on our perceptions of and experience with them. I used to thoroughly dislike oil burners for their noise, smoke and lackluster performance, and the fact that they ran on greasy, smelly stuff that was more expensive than gasoline, could be hard to find and was nasty to get on your hands when refueling. Those negatives, for me, trumped diesel's major positives of big torque for strong acceleration and better fuel economy. Are any of those knocks on diesel still valid today? I'm not talking semis, which continue to annoy me when their operators for some reason almost never shut them down. At any busy truck stop, the air seems always filled with the sound – and sometimes smell – of dozens of big-rig diesels idling endlessly and mindlessly. Or diesel heavy-duty pickups. Those muscular workhorses are far more refined than they once were and burn much less fuel than their gasoline counterparts. But good luck arriving home late at night, or departing early morning, without waking your housemates and neighbors with their clattery racket. No, I'm talking diesel-powered passenger cars, which account for more than half the market in Europe (diesel fuel is cheaper there) yet still barely bump the sales charts in North America. Diesel fuel remains more expensive here, too few stations carry it, and too many Americans remember when diesel cars were noisy, smelly slugs. Also, US emissions requirements make them substantially more expensive to certify, and therefore to buy. But put aside (if you can) higher vehicle purchase and fuel prices, and today's diesel cars can be delightful to drive while delivering much better fuel efficiency than gas-powered versions. So far in the US, all except Chevrolet's compact Cruze Diesel come from German brands, and all are amazingly quiet, visually clean (no smoke) and can be torquey-fun to drive. When a GM Powertrain engineering team set out to modify a tried-and-true GM of Europe turbodiesel four for North American Chevy Cruze compacts, says assistant chief engineer Mike Siegrist, it had a clear target in mind: the Volkswagen Jetta TDI 2.0-liter diesel. And they'll tell you that they beat it in nearly every way. "I believe we have a superior product," he says. "It's powerful, efficient and clean, and it will change perceptions of what a diesel car can be." The 2.0L Cruze turbodiesel pumps out 151 SAE certified horses and 264 pound-feet of torque (at just 2,000 rpm) vs.

Kid Rock's Chevy Silverado is a working-class hero [w/video]

Rock stars are known for their swagger, and Kid Rock brings a mountain of that confidence to his design for this chrome-festooned 2016 Silverado 3500HD at the SEMA show. Inspired by his song Born Free and a visit to the pickup factory in Flint, MI, the styling is meant to celebrate the folks that build these trucks everyday. The Silverado sparkles like a beacon under the lights at the SEMA Show thanks to its black metallic-flecked paint and acres of chrome. The shiny stuff covers the custom grille, exhaust stacks, 22-inch wheels, and side steps. In a patriotic nod, silver Stars and Stripes run down the side to offer a little contrast to the dark body. Further emphasizing the pickup's huge size, a trailer carries a pair of Gibbs Sports Quadskis that are decorated to match the truck. Kid Rock takes inspiration from – get this – acid-wash jeans for the interior by combining Sky Cool Gray leather seats with metallic-looking inserts. Appropriate for a musician, there's also a custom Kicker stereo in there, and Made in Detroit logos adorn the door sills and glovebox. Related Video: Show full PR text SILVERADO 3500HD KID ROCK CONCEPT CELEBRATES FREEDOM Boldly styled custom 'dually' truck honors working-class Americans LAS VEGAS – Inspired by his hit song "Born Free," musician Kid Rock collaborated with Chevrolet to design a customized 2016 Silverado 3500HD "dually" that celebrates freedom and honors American workers. The truck was introduced today at the SEMA Show in Las Vegas, where it joined other personalized Chevy truck concepts designed to showcase the depth and breadth of the brand's pickup truck lineup. Michigan-born Kid Rock visited the Silverado HD assembly plant in Flint, Mich., to meet with the members of UAW Local 598, who built the truck, before driving it to Chevrolet's design studio to share his ideas for its customization. "The Flint plant – and everyone on the line – is the backbone of America," said Kid Rock. "I wanted the design for the truck to be bold, but with features and elements that wouldn't be out of reach for working-class guys." As a result, his Silverado features several enhancements, including a custom chrome grille with the Born Free logo and an enlarged Chevy Bowtie emblem, chrome exhaust stacks and patriotic graphics that flow across the body sides. A unique execution of the patriotic motif was an idea he expressed at the start of the project.

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.