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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 Mustang Mach-E fails Sweden's moose test

The infamous moose test has claimed another casualty. This time it's the Ford Mustang Mach-E AWD Long Range, which was tested in an electric four-way alongside the Tesla Model Y, Hyundai Ioniq 5 and Skoda Enyaq iV (an electric utility vehicle closely related to the Volkswagen ID.4 that is sold in the United States). According to the Swedish testers at Teknikens Varld, Ford's electric car not only failed to hit the speed necessary for a passing grade, it didn't perform well at slower speeds, either. To pass the outlet's moose test, a car has to complete a rapid left-right-straight S-shaped pattern marked by cones at a speed of at least 72 km/h (44.7 miles per hour). The test is designed to mimic the type of avoidance maneuver a driver would have to take in order to avoid hitting something that wandered into the road, which in Sweden may be a moose but could just as easily be a deer or some other member of the animal kingdom elsewhere in the world, or possibly a child or car backing into the motorway. Not only is the maneuver very aggressive, it's also performed with weights belted into each seat and more weight added to the cargo area to hit the vehicle's maximum allowable carrying capacity. The Mustang Mach-E only managed to complete the moose test at 68 km/h (42.3 mph), well below the passing-grade threshold. Even at much lower speeds, Teknikens Varld says the Mach-E (which boasts the highest carrying capacity and was therefore loaded with more weight than the rest of the vehicles tested in this quartet) is "too soft in the chassis" and suffers from "too slow steering." Proving that it is indeed possible to pass the test, the Hyundai and Skoda completed the maneuver at the 44.7-mph figure required for a passing grade and the Tesla did it at 46.6 mph, albeit with less weight in the cargo area. It's not clear whether other versions of the Mustang Mach-E would pass the test. It's also unknown if Ford will make any changes to its chassis tuning or electronic stability control software, as some other automakers have done after a poor performance from Teknikens Varld, to improve its performance in the moose test. Related video:

Yearly auto recall record demolished in 6 months

With nearly 40 million vehicles under repair campaigns and counting, 2014 will almost certainly go down as the year of the automotive recall. At just past the halfway mark, we are already at record levels, and there aren't any signs that the epidemic is slowing. General Motors' latest 8.4 million vehicle recall in the US puts the industry over the top for the title of the most cars with fixes pending from automakers ever. That's a prize no one ever wants to receive. According to TheDetroitBureau.com, the US recall total has hit 39.85-million vehicles to surpass the previous record of 33.01 million in 2004. Perhaps more surprising, with over 26 million repairs pending, it's still quite possibly that GM could recall more vehicles by the end of the year than the 27.96-million unit total of the entire US auto industry last year. With over 40 campaigns under its belt in 2014, the roughly one million cars it would take would hardly come as a surprise at this point, especially with increased government scrutiny into the Detroit automaker's processes. The pace of recalls started off relatively normal this year, with just a smattering of campaigns. The most surprising early on was Aston Martin calling in about 75 percent of its output since 2007 due to counterfeit plastic, but with just a few thousand cars, it was relatively tiny in pure numbers. GM really kicked things off soon after, but we didn't know it at the time. It issued its first bulletin for 778,000 Cobalt compacts in early February. Things only ballooned from there as more models were added to its growing ignition switch problem. The onslaught of announcements from every major automaker hasn't abated since then. Some industry executives are trying to put a positive spin on the situation. "With what's transpired (in recent months), there's a higher level of scrutiny," said Joe Hinrichs, Ford president of the Americas, to TheDetroitBureau.com. He believes that automakers are looking at data much more thoroughly than before, and it means better customer safety. Still, many consumers probably wish these problems had been found before their car went on sale.