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Jay Leno joins the dark side with Darth Vader's car

There still isn't a better Star Wars villain than Darth Vader. The Sith Lord defines menacing with his black suit, deep voice, and a penchant for choking underlings. Maybe The Force Awakens can introduce a better bad guy when the film hits theaters in the coming days, but Vader remains king until then. Jay Leno now shows some respect for the dark side of the force by welcoming Darth's car into his garage. This isn't just the tiny Hot Wheels toy, but the fully drivable version that premiered last year at San Diego Comic-Con. The car's design clearly evokes Vader's iconic helmet, but it still looks like a mean hot rod. Designer Bryan Benedict also shows Leno a few other Star Wars touches in the styling, like the light saber side pipes and Imperial logos on the wheels. One of the coolest features is that the roof rises out of the way to let in passengers, which is a small nod to a scene from The Empire Strikes Back. Underneath the Vader-inspired shape, the car uses a heavily modified C6 Chevrolet Corvette platform, and Jay gets to take it for a short drive. Leno even leans into the dark side with some maniacal laughter while behind the wheel. Related Video:

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

2016 Chevrolet Malibu First Drive [w/video]

You have to appreciate honesty in this business. When a car company admits its offering in a segment isn't up to the task, it catches you by surprise. The surprisingly open Chevy reps stopped short of saying that making the last Malibu smaller was a mistake, but given that the righting of the ship included a lengthening of this new model, it was certainly implied. The eighth-generation Malibu lasted only three years, with a major update coming just one year in to try and fix some of the bigger concerns. The goal for the 2016 Malibu wasn't to make a competent product better, it was to make an okay one good again. That started with a stretch. The Malibu is long again, a big car that meets America's warped idea of a midsized car. Because of this, the Malibu's dimensions sidle up to the Impala's. In fact, it's within a fraction of an inch of the Impala's wheelbase measurement, and sits right between the last Malibu and the Impala in terms of EPA passenger volume. The back seat gets the most of the payoff, bringing it back into competition with other midsized counterparts. The Malibu is now one of the longest in the segment, but also among, if not the, lightest. The 2016 model is claimed to be about 300 pounds lighter than its dimensionally challenged predecessor. While most new models tend to choose between lighter or larger these days, Chevy managed not-insignificant improvements to both. Styling doo-dads no longer separate the trim levels, it's the features inside that fuel the upsell. Some of that weight came out of the front end. The aluminum hood is lighter than before, and we'd wager that's because it stops very short of the leading edge of the car. Instead, the nose is enshrouded in a big plastic fascia, which has to be an advantage at the scales but creates a somewhat unfinished look. That's amplified by the fact that everything ahead of the hood is a bit busy, and actually surprisingly aggressive, in contrast to the rest of the design. The new Cruze, with its cowl-to-grille hood, wears a more cohesive new-Chevy front end. The styling adopts the, dare we say it, coupe-like look of many (most?) new family sedans. The profile is attractive enough but almost generic now since the Chrysler 200, Ford Fusion, and others have already moved in this direction. The rear-end styling is inoffensive, almost original Mercedes CLS meets current Impala.