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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.

Such Sweet Sorrow: Cadillac's CTS-V gets an Irish wake

As the saying goes, all good things must come to an end. The honkin', stonkin' second-generation CTS-V, powered by Cadillac's brawny supercharged 6.2-liter V8 has been a very good thing. And now that the 500 final coupes – the only CTS-Vs designated 2015 models – have been built (just five remain unsold as of this writing), it is indeed a good thing that's come to an end. But Cadillac is not letting 2009–2015 CTS-V go gently into that good night, even as its replacement is poised to debut in just in just two months at the 2015 Detroit Auto Show. Instead, Cadillac invited us to Austin's Circuit of the Americas racetrack for what it called an "Irish wake" for the model that has proven to be one of the quickest and most charismatic models in General Motors' history. If you don't know what an Irish wake is, if you envision storytelling, songs, debauchery and more than a little liquor, you'll be in the ballpark. In this case, though, adrenaline substituted in for the booze, with squealing tires and shrieking V8s providing the singing. The debauchery took the form of an all-you-can-drive lapping of COTA in all three bodystyles – coupe, sedan and wagon – and the stories were told by the grins plastered on our faces all day. First and foremost, we'll miss the CTS-V's perfect balance of luxury and sportiness. Even after six years with no major changes, the CTS-V is surprisingly spry. Certainly, you never forget that it's a heavy thing, weighing in anywhere between 4217 pounds for the manual-equipped coupe to 4424 for an automatic wagon, but with 0-60 times of about four seconds and the ability to hit about 150 mph on COTA's back straight, the Vs remain an absolute hoot on the track. Sure, some of its details – the blocky front fascia shapes and the spoiler on the sedan and coupe models, for example – look a bit dated, but the overall design still looks sufficiently badass. The interior design has worn pretty well, too, and however Cadillac may feel about center stack buttons being so last decade, we favor them over the capacitive-touch madness of today's CUE system. We're not going to bother doing another full review of the car here, but suffice it to say, there is plenty we will miss. First and foremost, will be the CTS-V's perfect balance of luxury and sportiness. Rumor has it that Cadillac will offer the 6.2-liter LT4 V8 in the next generation (we predict about 600 hp), but we hear that the new car will skew more toward luxury than balls-out performance.

2023 Cadillac Lyriq production model revealed with range, power, price

We got our first look at the Cadillac Lyriq's design last August, and now the company is revealing the official production version of the electric crossover. The good news is that it looks almost identical to the preproduction version no matter where you look, inside or outside the car. It has the same long hood, low roof, creased body work, illuminated grille and groovy taillights. The interior retains the 33-inch instrument and infotainment screen and wood and metal trim. Only detail changes to things like the camera in the grille and the reworked control knob in the center console distinguish it from the concept. So if it basically looks the same, what's new here? Well, we finally have specifics on all the stuff that powers the concept-car body. At launch, the Lyriq will only be offered with a single motor and rear-wheel drive. The motor makes 340 horsepower and 325 pound-feet of torque funneled through a single-speed transmission. Supplying the motor with juice is a 100-kWh battery, though Cadillac didn't specify if that's the usable capacity or gross capacity. Cadillac estimates that the battery will provide more than 300 miles of range on a single charge. The initial models will be equipped with on-board charging equipment that can handle 19.2-kW Level 2 charging and 190-kW DC fast charging. The former can add 52 miles of range in an hour, and the latter can add 76 miles of range in 10 minutes and 195 miles in half an hour. Cadillac has made no mention of an 800-volt extra-fast DC charging system like in the GMC Hummer EV. There's a chance a system like that could be offered later, just like the forthcoming all-wheel-drive Lyriq variant. The Lyriq rides on multi-link independent suspension at all four corners, using "passive-plus" shocks, so it won't be adaptive or use GM's fancy magnetic suspension, at least at launch. Braking is provided by large 17-inch rotors at the front and 18-inch units at the back, welcome additions for the 5,610-pound crossover. Cadillac also gave us some basics on what equipment will be offered with the first run of Lyriqs. Only two colors, a silver and a black, will be available to begin with, and another silver will come a tad later. We imagine more colors will be offered on later Lyriq models. The interior comes in gray or black. Twenty-inch wheels are standard with 22-inch examples available as an option.