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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.

GM considering new powertrain options for large SUVs

Aside from the new General Motors offerings, there's not a whole lot of action going on in the fullsize SUV segment. That doesn't seem to be stopping GM from pushing the envelope in the market as Automotive News is reporting that the automaker is looking to introduce some new powertrain options into the Chevy Tahoe (and Suburban), GMC Yukon (and Yukon XL) and the Cadillac Escalade - all have been redesigned for the 2015 model year.
Now, we already know that GM and Ford are collaborating on nine- and ten-speed transmissions for a broad range of applications (including the big SUVs), but this new report says that GM is also considering other options as a way to one-up the competition and, of course, to optimize fuel economy. AN quotes Jeff Luke, executive chief engineer for GM trucks, as saying that "interesting powertrain technologies" are coming including a return of a hybrid SUV and possibly even a diesel engine. Although it sounds like the latter could come down to how customers respond to the 2014 Jeep Grand Cherokee EcoDiesel.

Cadillac ATS failing to command BMW 3 Series-like pricing as hoped

The BMW 3 Series has long been the benchmark for small and sporty luxury vehicles, but the Cadillac ATS has come on strong in its short time on the market as a true rival in this segment. As impressive as Cadillac's new compact sedan is, however, Automotive News is reporting that the car is still lagging behind the 3 Series when it comes to actual transaction pricing.
According to the article, the average transaction price for the ATS is $39,459 while the 3 Series is at a much larger $44,764, but, just as importantly, Cadillac has about $500 more in incentives on the ATS compared to BMW. Transaction prices are much closer to cars like the Mercedes C-Class and Audi A4. Of course, this is all with the ATS trying to take on its small,sport sedan rivals with a single bodystyle and limited powertrain options compared to the numerous options available from the German automakers in this class.
This uneven battle won't last long, though, as recent spy shots have revealed that Cadillac is hard at work on a high-performance ATS-V and an ATS Coupe. No official word as to when either of these models will be unveiled, but with auto show season set to kick off, we're expecting sooner rather than later. The best news for the ATS is that the Automotive News says sales of the ATS are on target and that 74 percent of ATS buyers are new to Cadillac - two important factors for the brand as it tries to break into this tough segment.