2011 Ford F-150 Tuscany 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 debuts Fusion NASCAR racer that edges closer to stock [w/video]

The sixth-generation NASCAR Sprint Cup racecar, which will make its competition debut at the 2013 Daytona 500 this weekend, marks the closest thing to a "stock car" that the sport has seen in more than 20 years. No longer using just stickers to distinguish the different brands, the image above shows the lengths NASCAR and automakers went in order to create a racecar design that more closely resembles the individual cars they represent.
Ford, one of the more open and vocal OEMs regarding the Gen6 car's development, is giving us a closer look at its racing version of the Fusion with a pretty revealing side-by-side comparison with last years' racer (click above for an expanded view). Aside from the more realistic front end and production-like body lines, the overall shape, dimensions and proportions have also been designed to give the racecar a more stock appearance. Most of the new racer was designed by the Ford Design Center, which the automaker says was the first time it has been so involved in the design process since the 1960s. Of course, one area the Sprint Cup Fusion really differs from the production Fusion is its Ford Racing 5.8-liter V8 producing around 850 hp. Can you say Fusion SVT?
Scroll down for a quick video from Ford Racing showing a production Fusion morph into a Cup car.

American automakers fall in latest Fortune 500 rankings

Not that it means anything beyond bragging rights, but if you're fixated on the positions of domestic automakers on the annual Fortune 500 list, both General Motors and Ford are still on it but they've slipped a couple of notches. The list ranks American companies and they're ordered solely by revenue. GM, fifth last year, came in seventh, while Ford fell from ninth to tenth even though both companies saw small gains in annual revenue.
GM's $152.3 billion in revenue was less than a third of that of the first company on the list: Wal-Mart, which regained the title from Exxon Mobil. Berkshire Hathaway and Apple are the firms that moved GM down. Ford, displaced by energy company Valero, had $134.3 billion in revenue.
On a side note, profitability isn't a factor, but both GM and Ford were down in this year's list compared to last year's: GM declined from $9.2 billion to $6.2 billion, Ford fell from $20.2 billion to $5.6 billion. If profits were included, Exxon Mobil would probably still be king: although the energy company made almost $20 billion less in revenue than Wal-Mart's $469.2 billion, it posted $44.9 billion in profit compared to Wal-Mart's $17 billion.