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Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.

Weekly Recap: Marchionne's Manifesto again calls for industry consolidation

Sergio Marchionne isn't taking no for an answer. Despite public rebuffs from General Motors and Ford, the leader of Fiat Chrysler Automobiles continues to push for consolidation within the auto industry. His latest assertion came Wednesday when he said a combination of FCA with another automaker could net savings of $5 billion or more annually. No, this isn't about selling his company, he claimed, it's about cutting costs. Put simply, the auto industry wastes money, Marchionne said during FCA's earnings conference call. Companies invest billions to develop basic components that all cars use, but many consumers don't care how they work or recognize the differences. "About half of this is really relevant in terms of positioning the car in the marketplace," he said. "The other half, in our view, is stuff which is neither visible to the consumer nor is it relevant to the consumer." In 2014, top automakers spent more than $100 million on product development, FCA estimated. Marchionne said consolidation could save up to $1 billion on powertrains alone, noting that almost every automaker offers four- and six-cylinder engines. Not everyone has to make their own, he contended. "The consumer could not give a flying leap whose engines we are using because they are irrelevant to the buying decision." That's pretty provocative for enthusiasts, but less so for average consumers. Still, there are major differences in power and efficiency ratings, even among similar engines. Skeptics could argue consolidation would also weaken competition and reduce choices for car buyers. Marchionne stressed his presentation, curiously entitled Confessions of a Capital Junkie, wouldn't require closing factories or dealerships. It's not his final "big deal" as CEO, intent to sell FCA, or a way to elevate his company up the automotive food chain. He claims he wants to fundamentally change the industry and its habit for burning cash. "The horrible part about this, and the thing that I find most offensive, is that the capital consumption rate is duplicative," he said. "It doesn't deliver real value to the consumer and it is in its purest form, economic waste." Other News & Notes Ford Profits dip in first quarter Ford profits fell $65 million to $924 million in the first quarter, hampered by slight dips in revenue and sales.

Ford Fiesta ST customs get wild at SEMA

The massive 57-car SEMA showcase by Ford ranges from obvious aftermarket-friendly models like the Mustang, to the not so obvious ones, like the Transit Connect and cute-as-an-explosive-button Fiesta ST. Ford plucked several Fiesta STs for SEMA duty, and we were on the show floor today to get a closer look at some of them.
First up is the striking COBB Tuning and Tanner Foust Racing Fiesta ST (above) finished in a black-and-gray digital camouflage, much like that used in the military, and is meant to raise awareness for the Pat Tillman Foundation. COBB also fitted a three-inch exhaust and a cold-air intake. A new shift knob, carbon-fiber hood and a Kicker stereo round out the mix of upgrades.
MRT got its hands on a Fiesta ST and created a car inspired by Forza Motorsport 5 (below, left). Featuring a two-tone paint job and more performance upgrades than you can shake a stick at, this Fiesta ST is one of the cooler compacts at Ford's stand. A high-performance exhaust system, along with a complimentary COBB induction system, allows the ST to breathe better, while an H&R coil over suspension and Steeda brakes help it stop and turn better than stock.