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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.

2016 Cadillac ELR gets more power, $9,000 price drop

Cadillac has announced a series of updates to the ELR for 2016 that promises to make the plug-in hybrid luxury coupe a more desirable proposition. Perhaps chief among them is a price drop of $9,005 compared to the slow-selling 2014 model. The news follows an announcement yesterday that the Chevy Spark would get a $1,500 price drop. Cadillac is quoting a net price for the updated ELR at $58,495, which is obviously substantially less than the $75k it was asking for the previous version. But it's important to note that the new price is listed after US federal tax credits. The 2014 model came in at $67,500 after the full $7,500 tax credit, so math tells us that Cadillac has slashed the price on the 2016 ELR rather dramatically by about nine grand with a new MSRP of $65,995. One big upgrade on the performance front is a 25-percent boost in output from the hybrid powertrain that marries a pair of electric motors to a 1.4-liter inline-four gasoline-burning generator. The increase is said to be enough to drop 1.5 seconds off the 0-60 time, now quoted at 6.4 seconds. It'll travel for up to 39 miles on electric mode alone, but with the generator spooled up will go up to 330 miles before needing to stop. The engine management software has also been updated and the regenerative braking system reconfigured as well, but GM's luxury division didn't stop at the powertrain, fitting the 2016 ELR with a raft of other enhancements. Visually there's a new grille with the marque's latest emblem embedded. The suspension has been stiffened, the steering recalibrated and the brakes optimized for better feel. Cadillac is also throwing in the previously optional Driver Assistance package of active safety systems as standard, with adaptive cruise control available as an option. And the infotainment system comes with OnStar, 4G LTE connectivity and on-board Wi-Fi. There's even a Performance Package available with 20-inch performance tires offering 10-percent better lateral grip, four-piston Brembo brake calipers up front to help reducing stopping distances by 12 percent, recalibrated dampers and steering and a thicker-rimmed steering wheel. Because of the higher rolling resistance tires, however, the Performance Package kills four miles off of the electric driving range.

GM's Reuss explains why Cadillac is heading to New York

"We're going to take it to a place [New York] to change the way that we do business around the brand of Cadillac." - Mark Reuss
General Motors product chief Mark Reuss elaborated Tuesday on Cadillac's move to New York in 2015, saying it will "elevate" the brand and allow it to reach new customers.