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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

Recharge Wrap-up: Elon Musk talks autonomous cars, Renault to run ZOE in ZENN Monte-Carlo Rally

Elon Musk discussed the autonomous driving capabilities of the Tesla Model S with NVIDIA CEO Jen-Hsun Huang. He said the car is already equipped with the hardware needed for highway driving. "Even with the current sensor suite, we could make the car go fully autonomous, but not a level of reliability that would be safe in, say, a complex urban environment at 30 miles an hour," says Musk. That would require "a bigger sensor suite, and you need more computing power." Huang and Musk also discussed car hacking and artificial intelligence during the interview at the 2015 GPU Technology Conference. See the video above, and read more at Teslarati. Renault will send four of its ZOE electric cars to the ZENN (Zero Emission, No Noise) Monte-Carlo Rally. The rally, which travels through the principality beginning and ending at the Port of Monaco, is open to electric cars with ranges of less than 250 kilometers (about 155 miles). Visitors can also explore an "electric village," which includes vehicle test drives and information about the future of automobiles. The race takes place from March 20 through 22. Read more in the press release from Renault below. A Seattle-area Nissan dealership has opened a "charging depot" with six fast chargers. Bellevue Nissan now claims to have a larger group of fast chargers than any other dealership in the country. The chargers are part of the NRG eVgo network, and will be available to drivers around the clock every day of the week. They'll also be part of Nissan's "No Charge To Charge" program for Leaf customers. Washington Governor Jay Inslee was on hand at the dealership for the opening, where he called such fast charging stations, "the backbone of our future transportation infrastructure." Read more at Hybrid Cars. A coalition of environmental groups and renewable energy advocates want New York to require all heating oil sold in the state to include at least two percent biodiesel. The proposal passed the Assembly's Committee on Environmental Conservation Tuesday. Its sponsor is Assemblyman Steven Englebright, a Long Island Democrat who says a biodiesel standard would reduce carbon emissions while boosting the state's agricultural industry. Supporters of a biodiesel standard include the New York League of Conservation Voters, the New York Public Interest Research Group and the state's Corn and Soybean Growers Association. Conventional oil companies are opposed.

2016 April Fools' Day: Morgan digs at Tesla, Mini's scissor doors, more

Every year automakers go out of their way to come up with gags for April Fools' Day. Sometimes the jokes fall flat, but occasionally a company really nails it with an idea that we'd actually love to see. Rather than scouring the Web for all of these stunts, you can find some of our favorites right here. Morgan MOGrod The Morgan Motor Company's MOGrod is one of our favorite April Fools' jokes so far this year because it's a car we wish could be real. The company says on Twitter that the retro hot rod uses a 3.7-liter Ford V6, and there are already 250,000 preorders, which is a play on the huge number of reservations for the Tesla Model 3. Morgan took the joke even further by sketching a landspeed record version for the Bonneville Salt Flats. Mini Scissor Doors The people at Mini apparently have a lot of free time because the company has two gags this year. The first is the scissor door option. The idea cleverly plays on the myriad ways customers can customize their Mini, but this solution doesn't look like anyone could easily enter the car due to the way these doors open. Mini Hipster Hatch There's also the Hipster Mini, which is a much funnier idea. This fictional hatchback would be perfect for fashionable Millennials thanks to features like Instagram-filter windows and a fixed-gear drivetrain, which limits the top speed to 25 miles per hour. The interior uses stonewash denim upholstery and packs a twin-deck cassette player. Skoda Dog Umbrella People love dogs, and owners know that a wet canine can be a mess. Skoda is ready to tackle this problem with an umbrella for your mutt. Made from unobtainium, the gadget hides in the door when not in use, but when raindrops start falling, people can keep their pup dry. Skoda Snowman Skoda's Facebook page also teases us with a very cool vehicle. The Snowman is a 396-horsepower plug-in hybrid snow machine. With its tracks, the company's newest model would never have to worry about getting stuck in the winter. Opel Adam C Sure, electricity and hydrogen are cleaner forms of fuel than gasoline or diesel, but Opel has a way to make your car even more environmentally friendly – muscle power. Wind up the crank at the rear for 15 minutes, and the Opel Adam C is good for 125 miles. GM's European division also claims that owners get a great workout because a full winding session burns 400 calories. You wouldn't feel guilty about picking up that pizza after cranking up this hatchback.