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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.

2015 Cadillac Escalade on sale in April priced at $71,695*

With the fourth-generation Cadillac Escalade set to go on sale in April, Cadillac has released the pricing data for its fullsize luxury SUV. While there's no retail configurator yet, the data posted on AOL Autos - and confirmed by Cadillac - shows that the 2015 Escalade will have a starting price of $71,695 (*not including $995 for destination).
This new starting price is about $8,000 more than the outgoing model, but Cadillac is quick to point out that the latest 'Slade is packed with more standard equipment in the new base Standard trim that actually puts it more on par with the midlevel Premium trim on the 2014 model (currently priced at $73,245). These new standard features include Magnetic Ride Control, LED headlights and taillights and 20-inch wheels.
Stepping up to the 2015 Escalade Luxury, the price increases to $75,695 and includes added equipment like 22-inch wheels, head-up display, power fold-and-tumble second-row seats and safety systems such as forward collision warning and lane departure warning. The top-rung 2015 Escalade Premium will start at $80,195 adding features such as a rear-seat entertainment system, illuminated exterior door handles and the Driver Assist Package consisting of front and rear automatic braking and adaptive cruise control.

Cadillac CT6 to get twin-turbo V8

Say what you will about his decisions at Infiniti and now Cadillac, but Cadillac CEO Johan de Nysschen knows how to deliver a compelling interview. During an online Q&A session with Jalopnik readers, de Nysschen offered substantial hints at what's coming for the brand. By dropping coordinates on the brand's star chart, in reading the entire thing and connecting the dots you can see a Cadillac that is much grander than the one we know now. The CT6 that got revealed during the Oscars telecast? Answering the question of whether it would have the performance to compete with a Mercedes S550 or BMW 750, de Nysschen said the big sedan's "lightweight body structure allows us to achieve formidable performance even with a twin-turbo V6. Imagine how this car would perform with a twin-turbo V8." In clarifying a subsequent question that also dealt with how the CT6 would compare to German rivals, he wrote that the CT6 would have "a very wide mix of engines, starting with a two-liter turbo, up to, eventually, a high-performance advanced V8 turbo." Patience and the future and the word "eventually" were heavy themes. The brand will embrace diesel engines as well, de Nysschen writing, "We will have four-cylinder and six-cylinder diesel engines, but not before 2019." As to the return of something like the XLR, which was Corvette muscle underneath a Cadillac body, he wrote, "I think in the fullness of time, we will get around to developing a high-performance, very-emotive sports car as a halo for the Cadillac brand. But we have so many projects to occupy us through 2020 that this will have to wait a little while." And on the design language across model lines, which enthusiast Cassandras have warned is too similar (as if that hasn't worked out for the Germans), he wrote that it is "undergoing gradual evolution and you will notice stunning new designs in future models, which remain unmistakably Cadillac and reflect our DNA but which take our sophisticated Art and Science design to a new level." But of course he would say that, which is what brings us back to patience and the future and eventually, when we'll see what this all really means. It all reads well enough, and we'd love to see it happen. One thing we won't see are the ducks that once adorned the Cadillac crest; when a reader asked if he could have them back, de Nysschen said, "No, you can't have them back. I play with them each night in my bath." Head over to Jalopnik for the full read. It's worth it.