A Jeep Grand Cherokee SRT mistaken for a Trackhawk; five legendary Ferrari supercars on a mysterious truck; and the Harley-Davidson Street 750 driven. It's the Week in Reverse, right here at Motor Authority.

We already confirmed that the Jeep Grand Cherokee Trackhawk is coming, and it'll use the Hellcat powertrain. This week a video surfaced on YouTube claiming to be of a Grand Cherokee Trawkhawk prototype, but it isn't. The video actually features a current Grand Cherokee SRT with a Tyrannos bodykit from Russia's Renegade. Consider that video title debunked.

How often will you see a mysterious-looking semi trailer holding five of Ferrari's best supercars? If you said never, you'd be wrong. The owner of a Ferrari 288 GTO, F40, F50, Enzo, and LaFerrari put his cars on one single tractor trailer and hauled them to a Concours-style event. The likelihood of you seeing this exact thing happen again, however, is slim.

Harley-Davidson needs a game changer, and it's hoping the new Street 750 model is it. The new bike is looking to steal the hearts of young riders who want easy-riding and reliable transportation. Can it bring fresh blood to the brand? We found out.

The new 2017 Mercedes-Benz E-Class is coming soon, and while the automaker hasn't revealed the car yet, it has shown us some of the technology incorporated into its latest creation. With no fewer than 23 external sensors on-board, the latest iteration of the German automaker's mid-size sedan will likely set the standard for the segment. We'll learn more as we near the car's debut at the 2016 Detroit Auto Show in January.

The Mercedes-AMG GT is fast, but not 10-second fast. Until now, anyhow. Renntech has created a series of upgrades for the new sports car that add up to the world's quickest AMG GT. The package turns a standard AMG GT into a 10.93-second car in the quarter-mile, with a 128-mph trap speed.


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