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Facelifted Cadillac ATS spied completely uncovered

The Cadillac ATS makes for a pretty svelte little coupe, and General Motors appears to know it, because multiple, completely undisguised prototype sedans have been spotted testing wearing what look like many of the forthcoming coupe's body parts.
Not only does it wear at least the outline of the brand's new, broader crest, it has the same front air dam with continuous chrome strip found on the coupe. The only real difference is that it has the somewhat taller side view mirrors from the sedan, rather than the narrower, longer ones from the coupe. Around back, the changes are harder to spot because the test car is outfitted with an unpainted lower bumper. However, it seems to lack the chrome strip that offsets the lower portion of the coupe from the sedan.
The ATS sedan is already a looker, but it is good to see Cadillac is taking a second pass using what it learned on the coupe. There's no word yet on when this revised sedan is going to hit the streets - let alone what changes will take place beneath the skin - but we're thinking it looks about right for 2015.

2021 Cadillac CT5-V Blackwing spied up close, showing off bronze wheels

Here is yet another closer look at the upcoming Cadillac CT5-V Blackwing sedan. Some pertinent details have been flying around this one for a while now. A photo of the interior showing a manual transmission is the latest leak, and it’s also one of the most exciting. Reports have also shone light on the engine: ItÂ’s supposed to be getting an updated version of GMÂ’s 6.2-liter supercharged V8. There will be no shortage of horsepower and torque. These latest spy shots reveal a couple of other new developments. For one, we get a really great look at the wheel and tire package on the car. Those dark bronze wheels are new, and they sure do look like production-style wheels to us. If anything, they remind us of the Brass Monkey wheel color found on Challengers and Chargers. Wide Michelin Pilot Sport 4S tires wrap those wheels. It gets 305-section-width tires in back and 275-section-width rubber in front. The wide, staggered setup is no surprise considering that this car will very likely put out more than 640 horsepower. ThereÂ’s a great deal of camouflage missing from the car as a whole, too. The hood is out in the open, and the same goes for the upper portions of the doors. ThatÂ’s because those parts of the car are virtually identical to the regular CT5-V. Sorry, no massive hood scoop on this sedan. The front grilleÂ’s lower opening does look significantly taller on this car, though. And where the standard CT5 has covered up fake vents, this car appears to have real, open venting. All the lighting is the same, but the maw of the CT5-V Blackwing is definitely much more aggressive than the standard CT5-V. Cadillac hasnÂ’t provided us with a date on when the new CT5-V Blackwing will be revealed, but has assured us that itÂ’s coming soon. We expect its little sibling, the CT4-V Blackwing, will debut right alongside this one. Related video:

How GM's grueling 24-hour test gets the kinks out of its performance cars

One of the biggest challenges automakers face when designing a high-performance car is making sure that it is both fast and reliable. For General Motors, any car that might be taken to the track by its owner - like the Corvette, Camaro Z/28 (shown above) and the Cadillac CTS-V, for example - undergoes a rigorous and strenuous 24-hour test by engineers at the Milford Proving Grounds, as pointed out by Car and Driver.
We've posted on this topic in the past - on a video showing the Camaro ZL1 being brutalized, for instance - but this article gives a more in-depth look at what actually happens behind the scenes... including what that poor ZL1 went through. Though the test isn't for 24 hours straight, the cars are pushed as hard as possible by some of GM's best drivers with only the brakes and tires replaced frequently.
We don't want to ruin the fun for you, but it is an interesting article that tells just some of what GM does to develop its sports cars. Check out the full article over at Car and Driver for the rest of the story.