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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.

No, Eminem is not giving away the Cadillac Ciel concept, Facebookers

Damn it, Facebook people, stop being so gullible. When you see something on social media that requires you to share or like a status or page in exchange for a chance at winning something, it's almost always a hoax. This goes for iPads, or Bill Gates giving away cash or, yes, an Eminem fan page giving away a Cadillac Ciel. Now, normally we'd simply ignore this utter hogwash, but it's getting some traction on Facebook and, annoyingly, is beginning to clog our newsfeed. Ignoring the fact that the Ciel is a pure concept car that likely can't even be registered for regular use, there are more than a few things that should give this nonsense away as a hoax. First, Eminem has only ever gotten in bed with one automaker – Chrysler. It seems unlikely that he'd defect simply to give away a car on Facebook. Secondly, the page that is putting on the giveaway isn't even a verified page – Eminem's real Facebook fan page has 97 million likes, this one has 622,000. Third, a quick look at the caption for the Ciel's photo, shown above, reveals the sort of grammatical mess that no serious contest would allow. Take a look (sic implied throughout): "Only 24 Days Until Christmas, Can you Imagine yourself driving this Car? I'm about to make that happen, Its Official, I Will be giving away this 2014 Cadillac Ciel to one random lucky fan, all you gotta do is follow these three easy steps, Step 1) Share this photo, Step 2) Like my page, Slim Shady Step 3) Like this photo, Winner Will be picked On December 5th 4 Days Away, Good luck to Everyone!!" We reached out to Cadillac spokesman David Caldwell just for fun. Apparently, this photo and schtick pops up every few months with virtually the same text, only to vanish at the end of the "giveaway." You're as shocked as we are, right? So, once again folks, just because it's on the Internet doesn't mean it's true. If your friends, family and acquaintances are blowing up your Facebook feed and social network channels with this nonsense, be sure to set 'em straight with a link to this story – we're sure the real Slim Shady will appreciate it.

Cadillac ELR getting massive discounts, some up to $14,000

Well, that didn't go as planned. General Motors had marketed the Cadillac ELR extended-range plug-in as a premium version of the Chevrolet Volt with some Caddy refinements. Now, it looks like that premium, at least from a price standpoint, is shrinking. Shoppers in a number of states are reporting that GM and its dealers are discounting the ELR in order to move more off dealer lots. The issue is that few people are biting at the official price tag of about $76,000, so GM has started offering as much as $8,000 worth of dealer and customer incentives, Transport Evolved reports. More recently, dealers in states such as Florida, Texas and Maryland are offering discounts in the $12,000-to-$14,000 range, and that's before any federal and state plug-in incentives kick in. It's not difficult to guess why. Through the first half of the year, GM sold fewer than 400 ELRs. Last month, Caddy moved just 97 units, or about as many as Tesla sells of its Model S in a day. Perpahs recent spy shots that reveal a test ELR that appears to up the sportiness quotient, with touches such as larger wheels and brakes, will also help sales. Check out Autoblog's "First Drive" impressions of the ELR here.