We already know all the details in and around the 2015 ATS Coupe, Cadillac->ke18's main weapon against the new-generation BMW 4 Series, but we have yet to find out too much about the high-performance ATS-V version, which is supposed to give the M4 fits. And that's because Caddy has been keeping everything under wraps, including the actual design of the car, leaving room for wild speculation. What we do know for a fact is that the brawny coupe->ke141 will arrive in dealerships for the 2015 model year.

What's more, a recent video coming from TFL Car suggests the production version is nearly ready to hit the assembly line. The heavily camouflaged ATS-V Coupe was spotted stretching its legs on a mountain road and it is widely known that high-altitude testing typically means the vehicle is very close to its production setup.

Although the camouflage manages to hide nearly every single detail on the car, the twin exhaust pipes are enough proof that there's an actual ATS-V Coupe under the fake skin. The vehicle also appears to be very fast when the driver drops the hammer, with the TFL team having a hard time keeping up with it at the end of the video.

Speaking of velocity, there's no word as to what might be motivating the new ATS-V Coupe, but our money is on GM->ke1024's twin-turbo, 3.6-liter, V-6 engine, which should generate between 450 and 500 horsepower. The beefed-up two-door will borrow most of its cues from the 2015 ATS Coupe, but look out for a more aggressive pair of bumpers, wider fenders, a lowered ride height and performance tires.

Stay tuned to TopSpeed for more details on Cadillac's upcoming street rocket.

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