2007 Ford F350 Diesel 2wd Dually Supercab Long Bed Extended Cab on 2040-cars

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Porsche 911 Turbo and Nissan GT-R Nismo star in World's Greatest Drag Race 4

We love Motor Trend's annual World's Greatest Drag Race video. Now back for its fourth appearance, the idea of lining some of the world's fastest cars up for a ten-wide, straight-line, full-throttle run is, well... it's pretty freaking badass.
The lineup this year boasts some impressively fast cars to be sure. The group of ten includes the following darlings: Alfa Romeo 4C, BMW i8, BMW M4, Chevrolet Camaro Z/28, Ford Fiesta ST, Jaguar F-Type R Coupe, Nissan GT-R Nismo, Porsche 911 Turbo S, Subaru WRX STI and, last but not least, the Volkswagen GTI. Give us any one of those for the weekend, and we're happy to take the keys.
It must be said though, that for a publication that draws as much water as Motor Trend does, there are some big cars that we might expect to be here instead. The Lamborghini Huracán or Ferrari 458 Speciale would have added some exotic flare to the list, and the omissions of the Chevy Corvette Stingray (for the second year in a row) and the Dodge Challenger Hellcat are real head-scratchers.

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.

Recharge Wrap-up: Tesla details factory expansion; Ford and SunPower raise money for Sierra Club

Tesla has revealed the details of the upgrade of its Fremont, CA factory. One major change is the addition of a dedicated production space for the dual-motor P85D version of the Model S. Robots will be doing the battery installation on the Model S to save some time, and new export docks allow Tesla to get the cars out the door and on the way to their new owners more quickly. The new robots that move the cars around the factory have been named after X-Men characters, which makes our inner geeks smile. Check out the factory upgrade in the time-lapse video below and read more at Teslarati or at the Tesla Motors Blog. A program in Beijing for privileged registrations for EVs hasn't had much success. Of the 1,424 lottery winners, only about 30 percent went on to register an electric car despite a two-month extension of the deadline to do so. Buyers are likely discouraged by the lack of charging infrastructure, which the city hopes to ameliorate with the addition of 1,000 new charging stations by the end of the year, and by requiring new and renovated developments to set aside parking specifically for EV charging. Read more at Green Car Reports. The UC Davis Institute of Transportation Studies suggests that laws designed to protect dealers and consumers are stymieing the adoption of EVs. Laws like the ones certain states have in place that block or otherwise restrict Tesla's direct-to-consumer business model are not helpful for companies that want to introduce new products to the market. They prevent companies from passing on savings to customers for whom they would likely make the difference in a purchasing decision. One possible solution would be to allow exemptions to certain selling restrictions for a certain number of vehicles sold. "This could give automakers the degree of control needed to work out kinks with early customers, develop scalable processes for supporting PEVs, and ensure that effective dealer performance standards are in place before handing the reins over to wholly independent retailers," according to UC Davis ITS. Read more at the UC Davis website. Volkswagen says its environmental program, called "Think Blue. Factory," is meeting the automaker's own sustainability targets. The main purpose of the program is to move toward eco-friendlier carmaking at each of its plants worldwide.