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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.

Jeff Gordon will come out of retirement to race new Cadillac endurance racecar

Jeff Gordon is not a man who takes well to retirement, apparently. That's not a surprise at all, given that we've been talking about his return to racing since almost the minute he retired in the first place. This year, he's taken the wheel for Dale Earnhardt, Jr., who is recovering from a concussion, several times already. So we shouldn't be too surprised to find out he's officially coming out of retirement – the twist is that it won't be in a stock car. Gordon has signed onto Wayne Taylor Racing, Motorsport.com reports, and he'll join Ricky and Jordan Taylor as well as Max Angelelli. Their ride will be the newly-revealed Cadillac DPi-V.R racer, a Dallara-chassis car powered by a 6.2-liter pushrod V8 loosely related, Cadillac claims, to the engine in the current CTS-V. You can read all about the DPi-V.R right over here. Remember, Gordon has a total of 93 NASCAR wins to his name, as well as four titles. He knows his way around Daytona pretty well, too, having won the 500 three times. He's also dabbled in endurance racing once before, in the 2007 24 Hours of Daytona with Taylor, Angelelli and Jan Magnussen in a WTR Riley-Pontiac car. They ended up on the podium, so you can say Gordon's inaugural and only outing in endurance racing so far was a success. It's been a decade, so we'll see if he's rusty, although knowing about how competitive champions are, we think he'll blow out the cobwebs and get right down to work. You can read Gordon's statement over at his personal site. Related Video:

GM reworking mandatory OnStar plans for some 2024 models

For the 2023 model year, GM added its OnStar and Connected Services plan as standard equipment to a large number of Buick, GMC, and Chevrolet vehicles. Folding the $1,500 retail price into the MSRPs of models like the GMC Acadia and Buick Encore plumped up prices beyond the usual year-on-year bumps. Looks like there's a reversal in play for 2024, GM Authority reporting that many of the models fitted with OnStar and Connected Services — now called OnStar Premium — will step down to three years of OnStar Remote Access standard.   OnStar Remote Access comes with these features: Remote key fob, vehicle locate, and remote personalization through mobile and in-vehicle apps. Three additional features can be added to the plan: OnStar Guardian, in-vehicle hotspot, and Super Cruise. Owners can also upgrade to OnStar Premium if they choose.  Higher trims like Buick's Avenir and GMC's Denali, plus the GMC Hummer and the Cadillac Escalade will retain OnStar Premium as standard equipment. That suite starts with Remote Access and adds: Automatic crash response, stolen vehicle assistance and recovery, OnStar Guardian, in-vehicle app access, unlimited streaming, three years of Super Cruise on vehicles with the hardware, and six months of SiriusXM radio. The Escalade puts a cherry on top with three years Sirius XM instead of six months. The Remote Access plan normally charges $14.99 per month. We're not sure yet if GM will subtract the cost of OnStar Premium from the MSRP and add the $540 for OnStar Remote Access, or if the trial period comes free of charge. Even if that's what happens, the change could take nearly $1,000 off the MSRP of a car like the GMC Acadia before any 2024 increases. We'll know more as the 2024MY models roll out and prices are announced. Related Video 2022 Buick Enclave Avenir revealed