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Cadillac Celestiq flagship EV shows off its tint-shifting smart roof

GM has high hopes for its upcoming Cadillac Celestiq sedan, slated for release in 2023. The flagship EV is being built to help the brand recapture its reign as “the Standard of the World.” As such, itÂ’s expected to arrive packed to the gills with cutting edge, futuristic technology including an all-glass roof that can adjust its opacity anywhere between crystal clear and completely opaque with the mere flick of a switch. These roofs, dubbed SPD-Smartglass, have been designed and manufactured by Research Frontiers of Woodbury, New York, and are based on Suspended Particle Device technology that was originally created as a replacement for the manual sliding window shades aboard commercial aircraft, Research Frontiers CEO Joe Harary told Engadget. Some of the earliest examples of SPD window treatments can be seen on the 2011 Mercedes Benz SLK roadster and in the 2012 Mercedes S Class coupe, which were used to increase headspace while eliminating the physical window shade screens, as well as various McLaren models over the past decade. As the YouTube video below explains, Research Frontiers SPD tech relies on polyiodide nanoparticles to generate its tint effect. Magic Sky Control Using SPD-SmartGlass Technology “SPD technology is smart glass that allows you to change the tint of the glass,” Harary explained. “There's this film that we invented that has little nanoparticles in it, which you can control with a small electrical voltage. So, basically this film... that allows you to dial in whatever tint level you'd like.”  “The crystals are about three to five tenths of a micron in length and they act as induced dipoles so when you apply an electric field to conductive coatings in the film,” Harary continued, “ the particles will line up, and allow light to pass through. Then, when you remove the voltage, their natural tendency is to be in the dark state due to Brownian movement and that causes the glass to tint.”  As the tint partially blocks incoming photons, it also reduces the amount of glare experienced by the driver and the heat trapped within the vehicle — over 99.5 percent of light and 95 percent of heat, per a January press release from the company. The claim is, this allows vehicle occupants to stay comfortable for longer without having to turn on the A/C, as well as keep the interior up to 18 degrees Fahrenheit cooler overall, Harary said.

2021 Cadillac CT5 adorned with Diamond Sky Special Edition Package

Among the changes due to appear on the 2021 Cadillac CT5 will be an exclusive Diamond Sky Special Edition Package. We don't have photos of the design theme yet, but Cadillac Society reports that the heaven-hued composition will only be available on the Premium Luxury trim. It starts with Diamond Sky Metallic paint that could provide perfect contrast for the Dark Sky Metallic offered on the GMC Sierra 1500. The CT5 goes all-in with the exterior color, dressing the rocker moldings and rear diffuser in Diamond Sky Metallic, and sitting on 19-inch wheels with a Diamond Cut/Midnight Silver finish. Tucked behind the wheels, buyers will find blue Brembo V Performance brake calipers. And having decided that standard taillamps will detract from the effect, for the first time on a non-V and non-V Sport Cadillac, the special edition CT5 will get clear taillights with a gray-tinted outer lens. The interior fabric comes in Sky Cool Gray with a Diamond Fall seat perforation pattern, offset with Jet Black accents, Galaxy Wood trim, and alloy pedals.  In typical Cadillac fashion, getting the Diamond Sky Special Edition Package will necessitate ordering another package when ordering opens next year. The required Climate Package bundles heated and ventilated driver and front passenger seats and an automatic heated steering wheel, and costs $1,090 in 2020. Elsewhere for the CT5 and the CT4, the next model year delivers a 12-inch customizable digital gauge cluster, plus the option of Super Cruise. Some of the changes already outlined for the 2021 CT5-V are likely headed to the CT5, so in the case of Super Cruise, for instance, checking that option could get real pricey, requiring the $1,300 Driver Awareness Plus Package as well as either the $8,330 Platinum Package or $1,950 Driver Assist Package.  Related Video:    

2020 Cadillac XT4 Review and Buying Guide | Competence and curb appeal

The 2020 Cadillac XT4 is a handsome little crossover distinctively sized between two segments. This allows it to boast backseat space on par with larger SUVs like the Audi Q5, while being a bit more park-able and fuel efficient like the BMW X1. There should definitely be a Goldilocks "just right" thing going on for many shoppers. Cadillac's baby SUV also impresses on the technology front, boasting loads of standard, advanced features along with a user-friendly touchscreen interface that shouldn't be too hard to figure out. There are dynamic missteps, though. The steering, throttle and brake pedals lack the driver-oriented response and feedback we've come to expect from Cadillac's sharply tuned sport sedans, while also not exactly possessing the nice-and-easy isolation of Caddy's past. In either scenario, we're not sure it "drives like a Cadillac" despite some otherwise impressive engineering going on underneath that handsome skin. The XT4 is also pretty expensive given its features, size and interior quality. Competitors both larger (Acura RDX) and smaller (Volvo XC40) provide better value. Still, as we noted in our XT4 first drive, there's enough novel tech to provide bragging rights, it's obviously a Cadillac in design (and definitely not just a rebadged Chevrolet in execution), and it's a pleasing enough place to sit while scooting around in traffic. It has competence and curb appeal, which count for a lot. What's new for 2020? After being an all-new model last year, the XT4 heads into 2020 with some noteworthy features updates: Forward collision warning and automatic emergency braking are now standard, while the Premium Luxury trim level gets the hands-free power liftgate as standard equipment.   What's the XT4's interior and in-car technology like? The XT4's interior design isn't as memorable as that of its exterior, nor its stylish Volvo XC40 and Lincoln Corsair competitors. It's a bit generic, which just doesn't seem right for a Cadillac. Materials quality is acceptable when closer to its base price, but begins feeling less so as options are added and the price tag rises. We've also driven multiple XT4's with an annoying rattle in the B pillar. Standard infotainment technology is abundant. Apple CarPlay and Android Auto are included with the standard 8-inch touchscreen and benefit from a pair of USB ports: one standard USB-A and the other a newer USB-C.