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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.

GM raises 2023 guidance on strong sales, higher profits

General Motors beat first-quarter profit estimates and raised its full-year earnings and cash-flow guidance after vehicle demand at the start of the year surpassed expectations. Its shares rose in premarket trading. GM made $2.21 a share in adjusted profit in the first quarter, compared to a consensus forecast of $1.72 a share. Revenue rose 11% to $39.99 billion, it said Tuesday, which was more than the $39.24 billion analysts expected. The stronger results stem from rising sales in the US, even in the face of higher interest rates and inflation. GM executives said demand was strong enough to revise 2023 guidance upward, boosting profit estimates for the year by $500 million to between $11 billion and $13 billion. “We did it with strong production and inventory discipline and consistent pricing,” GM Chief Financial Officer Paul Jacobson said on a call with journalists. “All in all, weÂ’re feeling confident about 2023.” The Detroit automaker raised per-share full-year guidance to between $6.35 and $7.35, up from $6 to $7 a share, and said free cash flow would also increase by $500 million to a range of $5.5 billion to $7.5 billion.  GMÂ’s shares pared a gain of as much as 4.4% before the start of regular trading Tuesday, rising 3.5% to $35.50 as of 6:55 a.m. in New York. The stock was up 1.9% for the year as of the close on Monday.  North American Strength The automakerÂ’s sales were particularly strong in North America, where first-quarter earnings rose before interest and taxes rose to $3.6 billion. Vehicle sales rose 18% to 707,000 in the region. Jacobson said the company originally expected to sell 15 million vehicles in the US this year, slightly less than the 15.5 million annualized rate automakers foresaw in the first quarter. North American demand was enough to offset a weak performance in China, GMÂ’s second-largest market. The automaker continues to struggle in the country, where its vehicle sales fell 25% to 462,000 vehicles in the quarter. Profits from its joint ventures in the market slumped 65% to $83 million.  The market has struggled overall in the wake of Covid-19 restrictions and foreign automakers have had to overcome a growing preference for Chinese brands by competing on price, squeezing profit margins. The situation in China probably wonÂ’t significantly improve until the second half of the year, according to Jacobson. GM remains on target to sell 150,000 electric vehicles this year, the CFO said.

2021 Cadillac Escalade will get next-gen Super Cruise with auto lane-change

Super Cruise is getting its first big update since it was originally launched on the 2018 CT6 sedan. As that large car fades away, this new version of Super Cruise will be coming online in the 2021 CT5, CT4 and … the 2021 Escalade! Yes, ladies and gents, Cadillac is finally applying its advanced driver assistant to the iconic Escalade. The biggest change to this version of Super Cruise is a new feature called “Lane Change on Demand.” When Super Cruise is engaged, the driver can tap the turn stalk, and the car will execute a hands-free lane change if itÂ’s safe to do so. This kind of lane-change functionality is similar to that offered by other manufacturers' systems (i.e. Mercedes-Benz, Tesla, BMW). However, like the rest of Super Cruise, the car is able to complete the task with the driverÂ’s hands completely off the steering wheel so long as the driver monitor can tell that youÂ’re paying attention. Further improvements abound. “This is our most extensive update weÂ’ve made to Super Cruise since its debut,” said Mario Maiorana, Super Cruise chief engineer. “We have made a number of improvements to make Super Cruise more intuitive, better performing and more accessible for our customers. In addition to the automated lane change functionality, weÂ’ve made improvements to the user interface and hands-free driving dynamics.” Cadillac says that it has gathered richer map information to make the lane change function possible and also to make turns and highway interchanges smoother. The software was also improved with the aim of gaining “better steering and speed control.” Cadillac also made the system easier to engage. It did this by allowing the operator to switch the Super Cruise system on, and then get the vehicle in a proper lane position — it automatically activates once the vehicle is positioned. Previously, the driver had to get the vehicle centered in the lane properly, and then you were allowed to switch the system on. The auto lane changing function operates similarly to other systems like it. When driving, you can either tap or fully depress the turn signal stalk. The car then looks for an acceptable opening in the indicated lane. Once found, the car begins its lane change. Within the gauge cluster, there are animations that keep the driver apprised of the lane change at all times. Once the vehicle has moved into the new lane, itÂ’ll shut the turn signal off and continue driving along.