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Cadillac CT6 uses aluminum to save 200 pounds

In Cadillac's recently launched ad campaign, the luxury brand's tagline is "Dare Greatly," and the two words suggest a brand willing to take big swings, even if they don't always connect. From what the company is promising, the forthcoming CT6 seems like an embodiment of that new motto. With an eventual range of turbocharged engines, reportedly including a turbo V8, a possible plug-in hybrid and streaming rearview mirror, the sedan is certainly pitched as tech showcase. Of course, extensive use of aluminum is practically mandatory to play in the luxury field these days, and Caddy is proving its latest creation can do that too. Despite the weighty appearance of the sedan's squared-off exterior, 64 percent of the CT6 is aluminum, including the entire exterior. Caddy claims that using so much of the lightweight metal sheds 198 pounds off the scales compared to using conventional steel. There still is some steel in the CT6; although it's predominately the high-strength variety. The engineers use the heavier metal for portions around the cabin and B-pillar for added safety. Cadillac also claims using steel "close-out panels" on lower portions of the sedan make the cabin quieter without needing as much sound deadening. The buildup to the CT6's public unveiling has been a long time coming after Cadillac pinned the flagship (for now) sedan's debut at the New York Auto Show nearly a year ago. When the sheet finally comes off on March 31, we get the first good idea about just how great Caddy's latest act of daring really is. Cadillac CT6 Elevates the Science of Mass Efficiency 2015-03-13 Technology DETROIT – Cadillac will use an advanced mixed-material approach for the lightweight body structure of the upcoming CT6 range-topping sedan. The structure is aluminum intensive, but the new Cadillac also includes 13 different materials customized for each area of the car to simultaneously advance driving dynamics, fuel economy and cabin quietness. The CT6 will debut March 31 at the New York International Auto Show and go into production late this year at General Motors' Detroit-Hamtramck assembly plant. "This is the rocket science of automobile construction and manufacturing today," said Cadillac President Johan de Nysschen.

Weekly Recap: Cadillac's crossover blitz hinges on the 2017 XT5

Cadillac's aggressive new cadence of crossovers begins next spring with the arrival of the 2017 XT5, the first of four new utility vehicles that Cadillac will unleash in a bid to win more customers and revitalize its image. The XT5 replaces the aging SRX, and it's the first SUV to use the brand's new naming scheme (cars will use the corresponding CT prefix). Billed as the cornerstone of Cadillac's remade crossover lineup, the XT5 will join showrooms right after Caddy's new flagship, the CT6 sedan. It will be on display next week at the Los Angeles auto show after first appearing this month at the Dubai motor show. "It's pivotal to our ongoing growth, which is why we've developed XT5 from the inside out to provide customers more space, more technology, more luxury, and more efficiency," Cadillac president Johan de Nysschen said in a statement. "Pivotal" is almost understating the XT5 and the red-hot midsize crossover segment. The SRX is Cadillac's top seller in 2015, posting a 25-percent increase and its 56,732 units (up 25 percent) are more than one third of the brand's 141,090 sales this year. Yes, the totals have been partially incentive-fueled, and Cadillac put an average of $7,225 on the SRX's hood in October, according to TrueCar data. Still, it's an impressive performance for any vehicle, especially one that's had few major changes since the new generation launched as a 2010 model. "The SRX has been selling very well, given how late in the lifecycle it is," AutoPacific product analysis manager Dave Sullivan told Autoblog. It outsold the all-new MKX last month and really only trails the Lexus RX. This is the volume model for Cadillac and dealers need this to be a grand slam, not just a home run." Cadillac is adamant the XT5 isn't an SRX re-skin. It has a new chassis, more interior room, and adds features like Apple CarPlay and Android Auto. Thanks to a new structure, the XT5 sheds 278 pounds compared with its predecessor, which should improve fuel economy and driving character. The crossover uses General Motors' latest 3.6-liter V6 rated at 310 horsepower and 270 pound-feet of torque, and it is fortified with variable-valve timing, cylinder-deactivation, and stop-start features. The V6 will team with an eight-speed automatic transmission and a twin-clutch all-wheel-drive system than can summon all of the torque distribution to the front or rear axles. Cadillac will also sell a 2.0-liter turbo four-cylinder model in China.

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.