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A look inside Infiniti's variable-compression engine

We're sympathetic to anyone who had trouble understanding what's going on with Infiniti's new variable-compression engine. While we got a full tech briefing on the novel VC-Turbo back in August, the visual aids were lacking. The cutaway engine Infiniti brought to the Paris show fixes all of that. You can thank the little green and pink lines on the cutaway for making the whole idea a little more clear. Click through the gallery to see two lines – one green and one pink – that represent the different strokes allowing for different compression ratios. Remember, the compression ratio is the amount of volume in the cylinder on intake compared to the amount at the end of the compression stroke. Leave more room at the end and you lower that ratio. The length of the stroke doesn't change with this system, but where it sits along the cylinder does. Hence those two lines. The variable compression ratio allows this new turbocharged engine to maximize fuel economy when the turbo isn't needed by raising the compression ratio. It will see its first use in the next Infiniti QX50 crossover, previewed by the QX Sport Inspiration concept that's also on display in Paris, and has performance targets of 268 horsepower and 288 pound-feet of torque. After, it will migrate to other Infiniti and Nissan vehicles, with transverse front-drive-based applications first in line. Eventually, it's likely to completely replace Nissan's corporate 3.5-liter V6. We'll be poking around the engine a little more in Paris today to try and get some more info. For now, enjoy those cutaway images and those friendly little lines. Featured Gallery Infiniti VC-Turbo engine cutaway View 14 Photos Paris Motor Show Infiniti Nissan Technology Emerging Technologies engine 2016 paris motor show

YouTuber TJ Smith is your singing Lyft driver in Nissan Sentra ad

Perhaps you've seen Nissan's latest commercial, promoting the Sentra. It's a fairly simple little spot, showing the compact's driver blaring Billy Idol's Mony Mony, singing along and encouraging other motorists to join in.
We'd have been fine had it been left at that. It's a simple commercial that shows the car with a catchy tune and smiling people. Nissan couldn't leave well enough alone, though, and has come back with this. Starring TJ Smith - the driver from the original ad and an apparent YouTube celebrity famous for the kind of thing shown in the original commercial - the new ad expands on the old, with more people, and more Mony Mony. This time round, Smith is serving as a driver for the Lyft service, who just happens to break into song with his fares in the car.
Scroll down for the full video. If you've no idea what we're talking about, we've also included the original commercial.

Nissan bringing GT-R LM Nismo to Le Mans in 2015 [w/videos]

The Nissan Zeod RC hybrid racecar is certainly cool with its pointy looks, we're excited to see it run, but it isn't built to win races so much as push boundaries. But we might not have too to wait long for one of the Japanese brand's vehicles to claim an overall victory at the 24 Hours of Le Mans, as well. The company is announcing the GT-R LM Nismo racecar with a two-car, full factory effort in the top LMP1 class of the 2015 FIA World Endurance Championship, including Le Mans.
Details about the new racer are almost nonexistent at the moment. The only glimpses that we have are its silhouette under a sheet (above) and the briefest peek at its quad circular taillights in one of the teaser videos. However, the team is making some big promises about the car. "We want to win in a very different way to that of our rivals. We won't be turning up in a vehicle, which is a basically another hybrid that looks like another Porsche, Audi or Toyota - they all look the same to me," said Nissan's Chief Planning Officer and Executive Vice President Andy Palmer in the official announcement. Mechanically, Nissan is revealing even less about the GT-R LM Nismo for now. We are just going to have to wait and find out.
The brand will be aiming for a win in the 24-hour race, but it won't come easy. Nissan will absolutely face stiff competition from the combined forces of Audi, Porsche and Toyota in the top LMP1 class. Scroll down to watch two teaser videos for the newest member of the GT-R family and read the full announcement.