2003 Infiniti G35 Base Coupe 2-door 3.5l on 2040-cars

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Infiniti's variable compression engine in the 2019 QX50 is the first of its kind

The world's first variable compression ratio engine is here, in a production car. That car is the 2019 Infiniti QX50, debuting this week at the Los Angeles Auto Show. The midsize crossover has seen a refresh that has brought it an all-new platform together with new driver assist features, but it's the engine that's the centerpiece here. Nearly everything is continuously variable under the hood of the QX50 – not only the new shift-by-wire XTRONIC CVT. The new VC-Turbo gasoline engine is able to change its compression ratio from 8:1 to 14:1, or anything in between depending of the driving situation; whether there is need for top-end power or turbodiesel-like torque from low revs, or optimized fuel economy. The pistons' reach is continuously adjusted by an electric "Harmonic Drive" motor, which controls a multi-link system, affecting the top-dead-center of the pistons and changing the compression. The engine can also switch between efficiency-maximizing Atkinson cycle and regular combustion cycle, on the go – and there's both multipoint injection and gasoline direct injection employed. The result is 268 horsepower at 5,600 rpm and 280 pound-feet of torque at 4,400 rpm; good figures for a 2.0-liter four-cylinder gasoline engine with a single-scroll turbocharger. Infiniti says that the FWD version's fuel economy of 27 miles per gallon combined is 35-percent better than the previous-generation V6 engine; in AWD guise, it reaches 26 mpg, which is a 30-percent improvement. The new engine is pretty much all-aluminum, but the vaguely magical-sounding "transformative multi-link components" behind the variable compression system are made from high-carbon steel alloy. The engine's multi-link system also enables it to do away with any balancing shafts, and Infiniti compares its smoothness to a V6 rather than a regular four-cylinder. In addition to the aforementioned tech, the VC-Turbo engine has the world's first active engine mount vibration damping system to smoothen its operation even further. Related Video:

Join Autoblog editors for a full video tour of the 2019 Detroit Auto Show

The 2019 North American International Auto Show might have been a little more quiet than past years, but there were still some pretty major reveals, including the Toyota Supra, new Ford Explorer, Shelby GT500, Subaru WRX STI S209 and Kia Telluride. We also saw some lovely concepts like the Nissan IMs and Lexus LC Convertible. Senior Editor Alex Kierstein, Consumer Editor Jeremy Korzeniewski and Senior Green Editor John Beltz Snyder join me, Associate Editor Reese Counts — with Social Media Manager Michael Dylan Ferrara behind the camera — on a long walk through the show. We discuss cars, poke around the stands, dress a bloody wound and answer your questions in the Facebook comments. For more Detroit coverage, you can check out Autoblog's picks for the best in show, listen to our podcast or look at the best images from all the reveals. Finally, don't forget to watch Editor-in-Chief Greg Migliore hand over our 2019 Technology of the Year award. Related Video: Green Detroit Auto Show Acura Cadillac Chevrolet Ford GM Hyundai Infiniti Kia Lexus Nissan RAM Subaru Toyota Volkswagen Truck Convertible Coupe Crossover Hatchback Minivan/Van SUV Videos Sedan facebook 2019 detroit auto show live

Nissan built a Skyline that you can almost live in

The Infiniti Q50 is pretty long in the tooth, but parent company Nissan is still trying to keep things interesting. In Japan it's sold as the Nissan Skyline, and a new concept based on the luxury sedan converts it into a space you could actually live in.  The cumbersomely named Nissan Skyline Contemporary Lifestyle Vehicle Concept adds a slew of convenience features that you should never use while driving. When parked, however, they turn your car into a little living room. For example, there's a little smartphone holder that folds out from the steering wheel so you can prop your screen up and watch a movie. If that's too small a viewing surface for you, the center infotainment touchscreen can be removed from its dashboard perch and used as a tablet. And if that's still too small for you, there's a screen mounted in the headliner above the rear seats. How do you watch a screen in that location? Glad you asked. The front seats, headrests, rear bench and passthrough to the trunk all lay flat in one uniform surface sleeping area. When lying down, the screen will be right above your head. And should you get cold, the driver's door panel pops open to reveal a blanket while the cupholder has a heating element to keep a beverage warm. On the flip side, should you get hot, a button on the inside B-pillar activates the air conditioning so you don't even have to sit up to access the climate control. While awake, you can avail yourself of multiple table surfaces located around the cabin. One folds out from the center console like on a business class airplane seat. A detachable sun visor also turns into a table. Then get a little work done by plugging in to either the 100-volt outlet in the passenger side mirror or an on-board portable battery. Obviously you wouldn't want to get your nice jacket wrinkled as you lounge in the car, so the grab handle above the door expands into a hanger wide enough to keep your coat uncreased. Other clever storage options include an umbrella compartment in the door sill, a bin located in the headrest, and a hands-free kick-activated locker below the rear bumper where a diffuser would reside. Perhaps most superfluous of all is a trash receptacle located in the driver's side mirror. You'd still have to empty it when full, but at least smelly garbage would be outside the car. Oh yeah, there's one final viewing surface, the largest of them all.