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Here's how Cadillac made its Magnetic Ride Control suspension quicker and smarter

Bugatti makes the world's fastest car, but Cadillac claims it has developed the world's fastest suspension. Its fourth-generation Magnetic Ride Control technology receives hardware and software tweaks to deliver a more comfortable ride and sharper handling. It's offered on some variants of the CT4, CT5 and the Escalade. Introduced in 2002 on the Seville STS, this self-adjusting suspension is not as complicated as it might sound. It relies primarily on electromagnets that emit a magnetic field, and a magnetorheological fluid whose viscosity changes depending on the strength of the magnetic force. Sensors scan the road up to 1,000 times per second and send the information they gather to the electromagnets, which then alter their magnetic field as needed to modify the fluid's viscosity. The fluid is in the shocks, so making it thicker returns a firmer ride, and vice versa. In simpler terms, Magnetic Ride Control leverages chemistry and physics to make the ride sporty, comfortable, or somewhere in between -- all in the blink of an eye. By reacting to the changing magnetic field, the fluid-filled shocks filter out road imperfections and maximize tire contact with the road to deliver more precise handling. Cadillac began developing the fourth-generation system by improving the hardware. The in-wheel accelerometers are more accurate than before, the inertial measurement unit is more precise, and the damper fluid formula was changed for quicker response times and a smoother ride. Engineers then turned their attention to the system's software. They notably gave the sensors the ability to process a wider selection of input and output signals, which translates to a wider spread between comfort and sport. And, they made the response time up to 45-percent quicker. All told, the fourth-generation Magnetic Ride Control technology performs better under heavy braking and hard cornering, it delivers more consistent performance, and it reads the road more accurately. Cadillac proudly notes these are the most comprehensive updates it has made to the system in nearly two decades. Magnetic Ride Control comes standard on the 2021 CT4-V and the 2021 CT5-V, and it's bundled into the CT5's V Performance package, which also includes a mechanical limited-slip differential. It's also standard on the Sport and Platinum variants of the 2021 Escalade, and it's part of the Premium Luxury trim's Performance package.

Genesis wins J.D. Power Tech Experience Study for third straight time

The results are out for the J.D. Power 2023 U.S. Tech Experience Index (TXI) Study, which "focuses on the user experience with advanced vehicle technology as it first comes to market and is an early measure of problems encountered by vehicle owners." Its measurement metric is problems per 100 vehicles (PP100), same as with the J.D. Power Initial Quality Study (IQS). The takeaway this year isn't that owners aren't using advanced technologies, as was the case with the 2022 study, or that they're having more problems with them overall. It's that owners of battery-electric vehicles are having more problems with advanced tech than owners of ICE-powered vehicles. According to the study, 17 of 21 features that can be had on both propulsion types — such as remote parking assistance and gesture controls — get lower satisfaction ratings by owners of BEVs, in some cases nearly 20 PP100.  The survey organization says this tracks with what its found in the IQS, where total vehicle problems were "46% higher among BEVs (excluding Tesla) than ICE vehicles and satisfaction is lower among owners of BEVs across nine of 10 APEAL categories than among owners of ICE vehicles." Findings regarding biometric measurements are among those that go against the overall study findings. Whether a fingerprint reader or an eye tracker, car owners in general said "they do not consider them to be useful." In terms of ease-of-use and satisfaction, plug-and-charge capability on EVs gets good marks. This allows EV owners to plug into a public charger and have payment taken care of automatically; the vehicle communicates with any charging station compatible with an automaker's plug-and-play system, so the vehicle can automatically submit a bill for the charging session to a central owner account with no further action needed at the station. Survey respondents noted a mere 6 PP100 and an 88.9% satisfaction.    Among manufacturers, repeat winners took the top prizes. Genesis earned the highest rank for innovation overall and among premium brands for the third straight year. Hyundai not only won the tech innovation banner for mass market brands for the fourth straight year, ahead of Kia, GMC, Ram and Subaru, Hyundai finished in second in the overall standings. On that overall chart, the top five are Genesis, Hyundai, Cadillac, Lexus and BMW. On the premium chart, Genesis is followed by Cadillac, Lexus, BMW and Mercedes-Benz in the top five. It wasn't close from the first to the rest, though.

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.