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Cadillac teases CT4 and CT5 V-Series Blackwing steering wheel

There's quite a bit that we know about the upcoming Cadillac V-Series Blackwing models. Thanks to spy shooters and prototypes, we've seen the CT4-V and CT5-V Blackwing out and about testing on public roads, which means we've seen the bronze wheels in staggered sizes. We've been told they will offer proper manual transmissions, and we know they will lap a race track quicker than the ATS-V and CTS-V they replace. And now we know what their steering wheels will look like. It's not much to base an entire teaser on, but there are a few interesting tidbits we can glean from Caddy's first official Blackwing tease. First, the wheel itself. It's leather wrapped (not Alcantra, at least on this example), it looks to have meaty bulges where you'll want to grip it, it has a red strip at the top to help locate straight ahead while driving aggressively, and it has a carbon fiber V-shaped spoke at the bottom. Finally, we see a prominent silver button labeled "V" on the left side that will allow drivers to quickly access V-Mode. To the right will be buttons for the Performance Traction Management system. Judging by the fuzzy background behind the wheel that shows some sort of digital gauge cluster, it seems that Cadillac may be aiming for a 200-mile-per-hour top speed for the CT5-V. That's not a stretch, as the last-generation CTS-V could hit that speed, too. Cadillac smartly took this shot in a way that blurs the center console, which means there's plenty more time to speculate on the transmission choices. Cadillac says the V-Series Blackwing models will be ready in time for the summer of 2021. Stay tuned. Related Video:  

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

Even if GM does close all 5 of those plants, it'll still have too many

DETROIT — General Motors' monumental announcement on Monday that it will close three car assembly plants and two powertrain plants in North America and slash its workforce will only partially close the gap between capacity and demand for the automaker's sedans, according to a Reuters analysis of industry production and capacity data. Sales of traditional passenger cars in North America have been declining for the past six years and are still withering. After GM ends production next year at factories in Michigan, Ohio and Ontario, it will still have four U.S. passenger-car plants — all operating at less than 50 percent of rated capacity, according to figures supplied by LMC Automotive. In comparison, Detroit-based rivals Ford and Fiat Chrysler Automobiles will have one car plant each in North America after 2019. The Detroit Three are facing rapidly dwindling demand for traditional passenger cars from U.S. consumers, many of whom have shifted to crossovers and trucks. Passenger cars accounted for 48 percent of retail light-vehicle sales in the United States in 2014, according to market researchers at J.D. Power and Associates. This year, sedans will account for less than a third of light vehicle sales. That shift in turn has left most North American car plants operating far below their rated capacities, while many SUV and truck plants are running on overtime. The collapse in passenger-car demand is a challenge for nearly all automakers in the United States, including Japan's Toyota and Honda, which have the top-selling models in the compact and midsize car segments. Toyota executives said last month they are evaluating the company's U.S. model lineup. But Toyota also plans to build compact Corolla sedans at a new $1.6 billion factory it is building in Alabama with partner Mazda. The obstacles facing GM in its plans to close more auto factories became apparent on Tuesday as U.S. President Donald Trump threatened to block payment of government electric vehicle subsidies to GM. While it is not certain that Trump unilaterally has the power to do that, he made it clear he intends to use his office to pressure the company to keep open a small car plant in Ohio that GM says will stop building vehicles in March.