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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.

GM executive chief EV engineer says reducing cost of plug-in vehicles is 'huge priority'

As we know, another major automaker investing heavily in electrified vehicles is General Motors, and it's doing things much differently than rivals BMW, Ford or Nissan. The Chevrolet Volt extended-range EV is a modest seller at its $35,000 sticker price but a huge hit with owners. The Chevy Spark BEV, still in limited availability, puts smiley faces on its owners and drivers. The just-introduced Cadillac ELR, a sharp-looking, fun-driving $76,000 luxocoupe take on the Volt's EREV mechanicals, has admittedly low sales expectations. With this interesting trio in showrooms and much more in the works, the third vehicle electrification leader I collared for an interview at Detroit's North American International Auto Show (see #1 and #2) was Pam Fletcher, GM's executive chief engineer, Electrified Vehicles. ABG: Why do your EREVs need four-cylinder power to extend their range when BMW's i3 makes do with an optional 650 cc two-banger? "We designed [the Volt and the ELR] to go anywhere, any time" - Pam Fletcher PF: I get that question all the time: why not something smaller? You don't really need that much. You use the electric to its ability, then you just need to limp. But we designed those cars to go anywhere, any time, and we don't want their performance to be compromised. If you're driving through the mountains, we don't want you to be crawling up grades, or to be limited on any terrain. So it's optimized to be able to travel literally the biggest grades and mountain roads around the globe at posted speeds. Because what if you can't? Another good reason: when the engine is on, you have to run it wide open throttle, max speed, most of the time. And while we can do a lot with acoustics, and the ELR has active noise cancelation, a small-displacement, low cylinder-count engine at high speed, high load all the time isn't something you want to live with. That's how we came up with the balance we did among the key factors of performance, NVH [noise, vibration and harshness] and range. ABG: Where you go from here? Is the range-extender engine due for an update? PF: We know and love the current Volt, and there is still a lot of acclaim about it, so we think it's a good recipe. But we are heavily in the midst of engineering the next-generation car, which I think everyone will love and be excited about.

2017 Cadillac XT5 First Drive

Thousands of feet above the Pacific Ocean, the winding roads that lead to the summit of Palomar Mountain turn from undulating curves to tight, blind, hairpin bends. Most drivers along this route are looking for a chance to exploit the limits of their cars' handling as much as one can on public roads, while taking in the bucolic views and endless blue skies. Up here, taking the thrilling curves at high speed is best left for drivers of performance cars who have platinum health insurance, lest the possibility of rolling a vertical mile toward Hellhole Canyon Preserve (we are not making this up) is not a deterrent. How different the experience is when you've chosen to climb the mountain in the 2017 Cadillac XT5, the crossover that replaces the SRX in a growing lineup of refined and redefined XT-named utility vehicles. An instant reminder that this SUV is not a Lotus comes as we enter a corner with a smidgen too much gusto, the tires begin to claw for traction, and the seatbelts tighten with the grip of sudden death. A quick tap of the brakes releases the belts, but not before a bead of sweat forms on the forehead. The overwhelming feeling is one of being unsure if this exercise is out of the XT5's comfort zone, despite Cadillac's goal of hitting the high-achieving sweet spot of the sport-luxury crossover segment. You'll know that an XT5 isn't an SRX when you first see one, although the differences are harder to tell when the two are parked side by side. The XT5 is the second Cadillac model to arrive since the brand learned to speak with a New York accent (albeit an affected Soho dialect) and it's a key pillar to the brand's chances at worldwide success. In 2015, the final year of sales for the five-year-old SRX, Cadillac managed to sell almost 100,000 of them around the world – no small feat for a model about to be replaced, and proof of the crossover's relative freshness and its popularity in export markets like China. Like the SRX that precedes it, the XT5 will be available with either front- or all-wheel drive (a $2,645 option), but that's one of few commonalities with the outgoing model. A new, lighter chassis helps the XT5 shed about 300 pounds, although Cadillac favors high-strength steel for bodywork and leaves aluminum for the engine and interior trim. In line with the revised brand guidelines for naming, SRX evolved into XT5, leaving room for larger and smaller utility vehicles to eventually join the lineup.