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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.

Ghostbusters director tweets first photos of new Ecto-1

Ghostbusters is heading back to theaters next year with a new look. Rather than bringing back the original's aging comedic actors, four actresses are taking over the starring roles, including Melissa McCarthy, Kristen Wiig, Kate McKinnon, and Leslie Jones. Although, one of the movie's major highlights is missing from that list – the Ecto-1. Originally based on a 1959 Cadillac ambulance, we're now getting the first glimpses of the decked-out, ghost-hunting wagon from the new version thanks to director Paul Feig on Twitter. Purists might like that the Ghostbusters are sticking with a Caddy, but the producers are going for a slightly newer, more macabre approach, as well. Rather than an ambulance conversion, the latest one starts as a hearse. Feig also has his Twitter profile picture of a ghost taking over as the hood ornament, and he even tweeted a shot of the rear. @szewcik_james Okay. pic.twitter.com/sHkx1Soj6p — Paul Feig (@paulfeig) July 8, 2015 Being the Internet, Feig is being deluged both with hyperbolic vitriol for changing things, and praise for the switch. He has politely tweeted about the situation. Not blocking or deleting. I hear you all and appreciate all your input, good or bad. Thanks. https://t.co/pxZsWGeNyL — Paul Feig (@paulfeig) July 8, 2015 Keep in mind this Caddy hearse is about as old today as the original Ecto-1 from Ghostbusters' release in 1984. Having the ladies driving a '50s Caddy might stretch the imagination too far even in a movie about fighting the undead. This approach seems like a perfect compromise between old and new.

Next Cadillac Escalade's interior spied for the first time

Update: Now that new spy photos of another large GM SUV have surfaced, we believe these shots show us a GMC Yukon interior, not a Cadillac Escalade. You can see the new spy shots here that depict a much more upscale vehicle interior compared to the fuzzy center stack shown in the shots of the Yukon. The new Cadillac Escalade has a lot of work to do in order to properly compete with Lincoln's wonderfully luxurious Navigator. These interior spy photos are our first look at what Cadillac is working with on the inside of its new luxury truck. We won't make final judgements, as this vehicle is still a prototype and subject to change. However, a few key bits are noticeable from the fuzzy photos. As expected, Cadillac's CUE infotainment and center stack is nowhere to be seen. Replacing it is a new interior design language, with a tablet-like screen that seems to rise out of the sloped stack on top. Below the screen is a strip of stitched leather and a couple prominently placed air vents. To the left of this area is what appears to be a push-button gear shifting system, replacing the column-mounted shifter currently in use. Below all that on a lower level of the center stack are all the climate controls, along with what look like physical buttons for what could be audio-related controls. Does it look as luxurious as the Lincoln? Not with all the coverings and shrouding it doesn't, which means we'll have to wait until we get the full picture. One thing that's clear is that the interior design is definitely going to be wildly different than the current Escalade. That center stack flows downward as one sloping piece into the high and bulky center console area. This design looks like it brings the center console further downward, and also uses a multi-tiered look. It's tough to read what's on the screen, but the software looks like the same stuff we got a preview of on the new Cadillac CT5 and CT4 sedans. As for the exterior shots, there's almost nothing that we haven't already gotten a taste of in previous spy photos. The independent rear suspension is a go, as are what appear to be massive headlight and LED DRL fixtures. If you look through the wrapping, you can make out how far up and down the lighting fixtures stretch ... or perhaps they're separate units altogether. It's tough to tell at this point.