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Vettel and Coulthard drive Russia's very unfinished Sochi Circuit

The next Winter Olympics will happen in Sochi, Russia from February 7-23, 2014. Sometime after that, barring any delays, a portion of the Sochi Olympic Park will be turned into the Sochi Olympic Park Circuit, a 3.65-mile track for the first Russian Grand Prix in 100 years (the last of two Formula One grands prix were held in St. Petersburg).
As we've come to expect from the Infiniti Red Bull team, it recently sent Sebastian Vettel and brand ambassador David Coulthard to the unfinished venue to run the route in Infiniti M sedans and offer some impressions. With average cornering speeds above 62 miles an hour, Coulthard called it a fast street circuit in the Monaco vein. You can watch them try it out - yes, that's Vettel gone airborne above - and avoid a "White Van Man" in the video below.

Infiniti looking for a new boss after Christian Meunier leaves to lead Jeep

Nissan's premium division Infiniti is expected to announce a new acting global chief for the brand, the company said, after its current head, Christian Meunier, left to lead the Jeep unit of Fiat Chrysler Automobiles. Nissan's chief quality officer Christian Vandenhende will oversee Infiniti's global operations effective immediately, until a new brand chief is named, Infiniti said in the statement on Tuesday. Meunier, 51, was named Infinit's global chief in early January after its previous boss Roland Krueger left the Hong Kong-based brand. Meunier will take over as global president for SUV-focused Jeep effective immediately, Fiat Chrysler said in a separate statement. Fiat Chrysler CEO Mike Manley had been running Jeep until he was elevated to the top job in July after the death of Sergio Marchionne. Meunier has international experience from his years with Ford, Land Rover, Nissan and Infiniti, which may prove valuable as Jeep attempts to expand overseas with a lineup of new products including the Gladiator pickup, a Wrangler plug-in hybrid, and the revived Wagoneer and Grand Wagoneer nameplates. He's worked mostly in sales and marketing roles, including as senior vice president of sales, marketing and operations for Nissan North America; chairman of Nissan Canada; and his recent role heading up Infiniti. An Infiniti spokesman said Meunier's resignation was not related to Nissan's internal investigation into its former leader Carlos Ghosn.

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