1996 Cadillac Superior Hearse - White With Lt1 Engine And 38k Miles on 2040-cars

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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 planning more Vsport models

There's a new intermediate class of luxury performance cars emerging. Audi has been doing it for years with its S-line bridging the gap, in many cases, between the standard fare and the full-on RS performance range. BMW's getting in on it with the M Sport line slotting in below the full M models. And now Cadillac is joining the fun with its Vsport offerings.
Models like the CTS Vsport and XTS Vsport are packing a new 3.6-liter twin-turbo V6 with 410 or more horsepower (along with bigger wheels and brakes) to slot in between the standard model and any impending V variant. Well, it appears Cadillac isn't about to stop there.
Speaking with The Detroit News, Cadillac product chief Hampden Tener revealed that, based on the response to the XTS Vsport, the brand is planning more Vsport models. He did not, however, indicate which would be the next to get the slightly sportier treatment. With the full ATS-V expected to pack a version of the same engine powering the aforementioned XTS and CTS Vsport models, an ATS Vsport would have to pack a smaller engine to fit in below. That only leaves the SRX crossover, Escalade SUV and the upcoming ELR hybrid. Food for thought.

Cadillac XTS to become Opel flagship sedan?

According to Auto-News.de, Opel is considering using Cadillac's all-new big sedan, the XTS, as the base for its new flagship car, which would likely carry the name Omega.
WorldCarFans.com speculates that Opel could use GM's 3.6-liter direct-injection V6 that generates 304 horsepower or, possibly, a 2.8-liter turbocharged six-cylinder engine that creates 321 horsepower to power the vehicle. The European automaker could even use a 195-horsepower turbocharged four-cylinder engine in this application - fine, since many of Europe's largest sedans are powered by smaller, more efficient engines.
Regardless of power, the Omega could arrive at dealerships by the end of 2013.