In this clip, CTS-V Lead Development Engineer Chris Berube talks about the 24-hour testing he and his team performed on the "V" at the GM Proving Grounds in Milford, MI. As Chris points out, the 24-hour test provides a final probe testing of the car before it goes into production under high-stress conditions. - Will Stewart, blog editor

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Here's some more video, this one featuring GM High Performance Vehicle Operations Director John Heinricy talking about his recent record-setting lap at Germany's Nurburgring (and answering first hand a couple of questions that have popped up here on the blog.) - Will Stewart, blog editor

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As promised, here's some very cool video from our test runs this week at our proving grounds in Milford, MI. Enjoy ... - Will Stewart, blog editor

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We had a chance to invite a few guests in to ride with us during some testing this week. Here's an extensive look at what they had to say:

• Autoblog.com
• InsideLine.com

- Will Stewart, blog editor

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By Chris

We're nearing the end of our testing in advance of CTS-V production launch. That means we've recently finalized some numbers. The SAE certified power is 556 hp and 551 lb-ft of torque. After our recent sub eight-minute lap at Nurburgring we also finalized some basic acceleration numbers. Zero to 60 mph is 3.9 seconds. We're doing the quarter mile in 12.0 seconds.

More to come in the next few days, including new video of our latest track
tests.

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