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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.

Cadillac recalls 17,500 SRX CUVs in Canada

When reporting on recalls, Autoblog generally tries to focus on the US market. However, a recent campaign in Canada seems important enough to be worth mentioning because it could eventually affect American drivers. General Motors is repairing 17,481 Canadian examples of the Cadillac SRX from the 2010-2015 model years because of the possibility of a loose nut in the rear suspension. For the moment, the automaker hasn't yet announced whether the CUV in the US would require a similar campaign.
The notice was dated September 18, 2014, on the website for Transport Canada, similar to the National Highway Traffic Safety Administration in the US. It says, "the rear suspension toe link jam nuts" might not have been sufficiency tightened, which could allow a rear wheel to turn "inboard or outboard" while driving. If this happens, it could cause a sudden change in handling. Canadian Cadillac dealers are inspecting the parts and replacing the toe link if necessary.
This campaign isn't listed on the GM's running recall tally from September, which includes exported models, but it does list four other campaigns for the SRX this year - three in this range of years and one for the 2004-2006 model. Autoblog reached out to the company to ask about the possibility of this recall expanding to the US and were told "We have not publicly announced US recalls" for the issues affecting the SRX. The New York Times was given a similar quote. Scroll down to read the notice from Transport Canada.

Cadillac LTS flagship to bow at NY Auto Show

There is widespread agreement across the industry that Cadillac needs a proper, rear-drive flagship sedan that completes legitimately with the Mercedes-Benz S-Class, Audi A8 and BMW 7 Series.
Fortunately, the same view is held within the company, and just such a car - possibly dubbed LTS - is under development. According to a high-level source at Cadillac, the new four-door, which is said to incorporate design cues from the marque's celebrated Elmiraj coupe concept, will debut at the New York Auto Show next April.
If the car needs a cheerleader, surely incoming president Johan de Nysschen is just such a person. De Nysschen doesn't arrive at Cadillac until late in the month, but certainly he will want a proper flagship to do battle with his old foes at Mercedes-Benz and BMW and old friends at Audi and Infiniti.