1966 Ford Mustang No Reserve on 2040-cars

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Ford Mustang Shelby GT500 has a bit of a dyno issue

We're of the mind that each and every dyno should come with Murphy's Law painted in big, visible letters down the side. For every ten successful dyno runs out there, it seems there's one where events to horribly wrong. Take, for example, the video below. The clip shows what happens when a Ford Shelby GT500 and a mobile dyno have a bit of a disagreement at the Performance Expo 24 in Sherbrooke, Quebec. We won't spoil the results for you, but we will say there's some substantial carnage involved.
It's unclear just how much damage ensues from the dust up or whether anyone was harmed in the incident, but from the looks of things, everyone made it out without serious injury. If only we could say the same for the machines involved. Check out the video below.

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.

Riding along in Ford's bonkers Fiesta ST Global RallyCross car [w/video]

The Mountune-worked Fiesta ST GRC does 0-to-60 mph in 1.9 seconds.
On any given day, and every single weekend, there's at least one parking in the country invaded by manufacturer and team trucks. The be-chromed beasts and their 53-foot trailers are slotted into rows, men and women decorate the lot with orange cones to mark the invisible tracery of a temporary track, cars get unloaded, crews fret over them. The ritual can be as beautiful as the sunrise to those with enthusiast hearts, but it's just as common.