Porsche just revealed the second-generation Panamera sedan last week and already the automaker’s performance-crazed engineers are at work on hotter models.

That’s according to an anonymous insider speaking to Motor Trend, who described the work-in-progress car as a “Porsche 918 with a back seat.”

Given that the spanky new Panamera, with its 550 horsepower 4.0-liter twin-turbo V8, just set a record time for any production sedan at the Nürburgring Nordschleife track, you might think the Porsche guys would be satisfied.

Apparently they are not.

Motor Trend’s inside source said the company is developing a Panamera that matches the twin-turbo V8 with the 918 Spyder’s plug-in hybrid technology.

SEE ALSO: 2014 Porsche Panamera S E-Hybrid vs. Tesla Model S – Video

That means electric motors will power the front and rear axles with the drivetrain yielding power output in the ballpark of 700 horsepower and torque somewhere around 800 pounds feet.

If the source is right, the Panamera Turbo S, which arrives next year, will no longer be the top dog in the line up with its expected 580 horsepower.

Motor Trend says the source doesn’t know the name of the new hybrid, but they are guessing “something logically German like Panamera Turbo S Hybrid.”

This monstrous-horsepower Panamera won’t be the only one adorned with a hybrid badge.

The standard supercharged V6-powered Panamera S Hybrid will make a return with the purpose of getting better fuel economy than the rest of the model line.

Motor Trend