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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.

2020 Cadillac CT6-V First Drive | A new kind of V

One of the weird tidbits of car news in the past year was the change in naming for the 2020 Cadillac CT6-V. When it was first revealed, it was called V-Sport, the term previously used for Cadillacs with more moderate performance upgrades than the full-blown V cars that possessed massive power outputs and serious track-going capabilities. But then, before the car in question went on sale, Cadillac changed the name to match the equally moderately sporty CT4-V and CT5-V that officially downgraded the V name. So what should we make of this CT6-V, then? Is it a hardcore performance machine like the old V cars? Or is it what we’re expecting of the new V cars: a lightly upgraded version of the base car that isnÂ’t particularly distinguished? As it turns out, the CT6-V sits between these two extremes to create a car thatÂ’s involving and exciting for the driver without compromising the CT6Â’s refinement and luxury. Mechanically, the CT6-V is ultimately closer to its full-bore V predecessors. The highlight is the “Blackwing” twin-turbocharged 4.2-liter V8 that makes 550 horsepower and 640 pound-feet of torque. Besides giving the engine prodigious output, Cadillac borrowed some pages from the AMG handbook: the turbocharger is nestled in between the cylinder heads, just like the current 4.0-liter AMG V8, and each engine is hand-built start to finish by one of six engine builders. The builderÂ’s name is even featured in the engine bay. TheyÂ’re special details that fit the idea of the old V cars, but the fact that a version of the same engine is in the Platinum CT6 does make its inclusion in the CT6-V seem less special, even if its output is notably less at 500 horsepower and 574 pound-feet of torque. Setting aside the details, the engine performs well in the real world. ItÂ’s astonishingly smooth, exactly what you want from a fast flagship. It also emits a unique exhaust note thatÂ’s both raspy and growly. You wonÂ’t mistake it for a pushrod powerplant. The power and torque provide a prominent push at all points in the rev band after a brief moment for the turbos to spool up. ItÂ’s just a shame there isnÂ’t much of a rev band, as the engine redlines at 6,000 rpm, which is easy to hit thanks to the engineÂ’s creamy character. ItÂ’s so low one wonders why Cadillac bothered developing a double-overhead-cam engine at all. The V8 is coupled to a 10-speed automatic transmission and all-wheel drive. The 10-speed is perfectly fine when cruising around town.

Junkyard Gem: 1998 Cadillac Catera

Every so often, during the last few decades of the 20th century, the suits running each of the big Detroit automakers would eye their European subsidiaries and decide that some car from the other side of the Atlantic could be making dollars over here in addition to pounds or francs or Deutschmarks over there. Chrysler didn't do so well with Simca 1204s or Plymouth-badged Hillman Avengers in the American marketplace (though the Simca-based Omnirizon did very well). Ford USA moved quite a few Capris and Fiestas during the 1970s, then bombed with the Merkur Scorpio and XR4Ti. General Motors tried, over and over, to get Americans to buy Opels (some sold by Buick dealers, others actually badged as Buicks), and I still see the occasional Kadett, GT, or Manta in junkyards to this day. For the 1997 model year, still stinging from the not-so-great sales of the Turin-Hamtramck-built Cadillac Allante, GM took the Omel Omega B and applied Cadillac badges. The result was the Catera, and I found this silver '98 in a Denver self-service yard recently. The Catera had a lot going for it, with a rear-wheel-drive layout and a modern V6 engine that made more power than the BMW 528i's straight-six that year. It should have been able to compete with European luxury sedans in North America because it was a European luxury sedan. Unfortunately, you couldn't get a manual transmission in the Catera, "traditional" Cadillac shoppers thought the Catera lacked a sufficiently massive presence, and younger Cadillac buyers flocked straight to the Escalade starting in 1999. After 2001, the Catera was no more. I still find Cateras in junkyards, nearly 20 years after the last ones were sold, so they appear to have held together pretty well. This one was in nice shape until the end, with all the original manuals still in the glovebox. Even the Catera ballpoint pen remained with the car for its whole life. As we can see in the owner's manual, Cadillac marketed the Catera as "The Caddy That Zigs." The idea was that younger car shoppers would become as Cadillac-obsessed as their grandparents had been. Inspired by the ducks in the Cadillac logo, the Catera marketing team created Ziggy the Duck to pitch this car. Things didn't go so well. The Catera listed at $29,995 in 1998, about $47,600 in 2020 dollars. That made it an affordable alternative to the BMW 5-Series or Acura 3.2 TL, but total Catera sales came to fewer than 95,000 cars over five model years.