2001 Ford F 250 Quad Cab 4x4 Diesel on 2040-cars

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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.

Ford, Volvo, Google, Uber and Lyft form self-driving alliance

Five companies arguably leading the worldwide effort to develop autonomous cars said Tuesday they're forming an organization to lobby the federal government to better prepare America's roads for self-driving technology. The founding members include some of the biggest companies in the automotive, autonomous, and ride-sharing realms – Ford, Google, Lyft, Uber and Volvo. Operating as the "Self-Driving Coalition for Safer Streets," they aim to work with lawmakers and regulators to clarify a disparate set of rules and regulations at both the state and federal levels that could hinder the deployment of autonomous cars. "The U.S. risks losing its leading position due to the lack of federal guidelines for the testing and certification of autonomous vehicles." – Hakan Samuelsson David Strickland, a former administrator of the National Highway Traffic Safety Administration who issued the first set of autonomous-related policies in that role (pictured below), will serve as the group's counsel and spokesperson. "The best path for this innovation is to have one clear set of federal standards, and the Coalition will work with policymakers to find the right solutions that will facilitate the deployment of self-driving vehicles," he said in a written statement. In January, Transportation Secretary Anthony Foxx said his department would accelerate efforts to craft such federal standards. Those efforts include holding two public hearings on standards, the second of which is scheduled to be held Wednesday in Palo Alto, California. Foxx signaled the intent to deliver them by June. Google has been leading the efforts to ensure such standards are national in scope, warning their cars could run afoul of state-specific laws should they cross state borders or if standards varies between the federal efforts and regional ones. The complexity of such efforts was underscored recently, when NHTSA agreed that Google's software could be considered the driver of a vehicle for the purpose of meeting federal motor vehicle standards, an interpretation that would conflict with preliminary California rules that mandate a licensed driver operate a self-driving car that comes equipped with human controls like a steering wheel and brakes. At South By Southwest last month, Jennifer Haroon, Google's self-driving car business leader, said the company couldn't accomplish its goals under those regulations.

How did Ford keep the GT a secret before Detroit?

True secrecy is a rarity in the automotive industry. Sure, companies try to keep their future projects under wraps all of the time, but usually a spy shot or blurry development photo leaks out. The complete lack of any hard details before its unveiling likely helped make the Ford GT one of the biggest stars of the 2015 Detroit Auto Show. Not only was it the favorite of Autoblog's editors, but the supercar scored a prestigious EyesOn Design Award, too. Rumors about the vehicle had circulated for weeks before the show, but no one really knew much about the GT until it rolled onto the stage for Ford's press conference in Joe Louis Arena. Amazingly, the Blue Oval kept things mostly a secret during the car's 14- month gestation period prior to its debut. According to Automotive News, the GT project began in late 2013 by a skunk works team, including six designers, that guided the supercar along from birth until the unveiling. Ford kept things clandestine by locking the vehicle in a basement storage room, and only the group members got a key to the lock. Much of the development was also done at night to further keep the secret, but occasionally the prototype was hauled outside on weekends to check it out in natural light. Because of the speed in getting the development done and for even more stealth, the designers didn't get input from the Blue Oval's other styling teams around the world. But that was somewhat of a double-edged sword. "You don't actually get to bounce opinions off people," Ford design boss Moray Callum said to Automotive News. "We were on tenterhooks ourselves until the first people saw it." Even now, there are still mysteries surrounding the GT. There's still no official word on the supercar's power; just that it's over 600 horsepower. There are also the persistent rumors going back months that the Blue Oval plans to take the GT racing to celebrate the 50th anniversary of automaker's Le Mans victory. Although, maybe this time the secrecy wasn't so good because we might have got a glimpse of the racer, recently. Related Video: