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Cadillac Elmiraj sedan RWD flagship finally caught testing

While we still have no insight as to it being named Elmiraj, STS or some other permutation of the -TS nomenclature ("LTS" has apparently been registered by GM, as well), new spy shots give us proof positive that Cadillac is indeed hard at work on a rear-wheel-drive flagship model. Spied for the very first time in some north country testing, these shots provide a first look at the upcoming range-topper from Cadillac.
Impressively long and large bodywork ride atop new General Motors' corporate Omega rear-drive architecture here. Heavy cladding over camouflage may discourage finding any details, but the overall, sharp-edged and blocky design is clearly reminiscent of what we've seen on the new CTS and the recently debuted ATS coupe. A strong, wheels-at-each-corner stance helps emphasize the length of this stretched Caddy, and everything about the proportions seem spot-on for a new fullsize flagship for the brand.
It's quite possible that Cadillac will ultimately festoon this large sedan with detailing reminiscent of the original Elmiraj coupe, though thus far we've only seen prototypes wearing four-doors.

Cadillac ATS and CTS get blacked-out treatments

Some still think of gallons of chrome when Cadillac comes to mind, and some of the automaker's models still take the blinged-out approach (we're looking at you, Escalade). But for those whose impression of the America luxury marque's is about more than brightwork, Caddy has announced a new Black Chrome package. Available for the ATS coupe, ATS sedan, and CTS sedan, the optional package, as you might have guessed, applies dark chrome to the outside of the vehicle. On the ATS, that includes the front grilles (upper and lower) and rear trim, as well as body-colored door handles, gloss black window moldings, and dark-finish 18-inch alloys. Buyers can choose to apply the package to the Luxury or Premium trim, with the 2.0-liter turbo or 3.6-liter V6, in rear- or all-wheel drive, with four exterior paint choices, any interior available, and in two- or four-door bodystyles. The package goes for $795 on the sedan and $595 for the coupe. The package costs a little more for the CTS but includes a bit less trim, limited to the grille and those same 18-inch alloys. It can still be paired to the 2.0 turbo or 3.6-liter V6 in rear- or all-wheel drive, with three exterior tints and a limited selection of interior treatments. Pricing here starts at $1,295 with the Luxury trim, or $1,095 in either Performance or Premium spec. Those looking for a shinier treatment, however, need not apply. Related Video: Cadillac Introduces Black Chrome Package for ATS and CTS ENHANCES ENGAGING PERFORMANCE, STRIKING DESIGN 2016-03-14 Cadillac today introduced the Black Chrome Package for Cadillac ATS Sedan and Coupe and Cadillac CTS Sedan. The package further enhances the engaging performance and the striking design of the ATS, a Consumer Guide Best Buy for three years in a row, and the CTS, named one of Car and Driver's 10Best for three years in a row. The Black Chrome Package is available now to order at local Cadillac dealerships or through the Build Your Own tool on the Cadillac.com website. For additional information, customers can call Cadillac Customer Experience at 1-800-458-8006.

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging