[Video] Patrick Dempsey took the Porsche Panamera prototype to Goodwood image

Grey’s Anatomy star turned racing driver Patrick Dempsey has hooked up with Porsche during the Goodwood Festival of Speed as a way of teasing the upcoming second generation Panamera during the well-known hillclimb.

The tease included a lightly camouflaged prototype of the Panamera turbo that enjoyed the spotlight – though we’re seriously wondering why Porsche is still trying since the cat is pretty much out of the back thanks to last week’s incredible 750 rpm and a maximum torque of 568 pound-feet (770 Newton-meters) from 1,960 rpm.

[Video] Patrick Dempsey took the Porsche Panamera prototype to Goodwood 5

The new mill is coming in lieu of the older 4.8-liter and is said to be way more economical also in part thanks to the use of the cylinder-deactivation system. It will be active under light loads – 950 rpm and 3,500 rpm – and Porsche says fuel economy will increase by up to 30 percent. The powertrain of the Panamera Turbo will also include an eight-speed, dual-clutch transmission developed by ZF. The all-new Panamera is expected to debut on June 28 and will break cover after five years of development and will be joined to form a complete lineup by a more practical wagon version and if the rumor mill got it correct – a coupe that will serve as the spiritual successor of the 928 model.