2004 Ford Explorer Eddie Bauer Automatic 4-door Suv 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.

Jay Leno drives postcard-perfect '32 Ford Highboy Roadster

At the turn of the century, it was arguably the Honda Civic that best defined inexpensive performance tuning, and in the '50s it was the Tri-5 Chevys. One of the earliest platforms to gain a huge following among young people looking for a cheap way to go fast was the classic '32 Ford Highboy Roadster. This week, Jay Leno's Garage looks at one of the very first vehicles that defined the look of the hot rod heyday.
This '32 Ford was built in the '40s and graced the cover of the fourth issue of Hot Rod Magazine back in 1948. All of the hot rods that you see shining at car shows today owe a serious debt of gratitude to this roadster. It bears all of the cues that define the look, including a notched frame and hidden door hinges. Under the three-piece hood is a flathead V8 boasting all sorts of period modifications, including copper cylinder heads. It was seriously fast in its era too, and proved it by reaching 112.21 miles per hour on a dry lakebed in 1947.
These days, this hot rod is on display at the Petersen Automotive Museum. Although, if you can't make it to California to see it, the United States Postal Service is celebrating this Ford with one of its two hot rod Forever stamps. Like Jay says in the video, in terms of hot rodding, "it all comes back to this." Check out the video to learn more about this rolling piece of tuning history.

Watch these videos of an NHRA racer's bodywork blowing off into a crowd

Just a few months ago, fan safety at racetracks was a hot topic following the last-lap NASCAR Nationwide Series crash at Daytona that sent large pieces of racecars into the grandstands injuring 33 fans. Now, a freak incident at a National Hot Rod Association event resulted in a drag racer's bodywork flying into the crowd at the NHRA Four-Wide Nationals in Charlotte over the weekend. The carbon-fiber body of Robert Hight's Ford Mustang funny car blew off toward the end of a run when his engine exploded, but fortunately, the two fans evaluated after the incident were later released without serious injury.
As you can see in the image above, the body flew high into the air before landing on a walkway in front of the grandstands, a bit of happenstance that likely gave most fans enough time and space to move out of the way. Scroll down to watch a couple of videos showing what happened, including one from a fan's perspective that also reveals what appears to be part of the body's metal bracing landing dangerously close to the crowd.