Panamera

At the Shanghai Motor Show this week, Porsche unveiled the new Panamera four door sedan, a first for Porsche.

The 2010 Panamera is Porsche's fourth model line, joining the 911, Boxster/Cayman and Cayenne model series. This is the first premium car with an automatically shifting double-clutch transmission with an engine start/stop system that saves gas and reduces emissions by turning off when not needed, such as sitting at a stop light, etc.

The 2010 Panamera will initially be available in three versions – the 400-horsepower two-wheel drive Panamera S, an all-wheel drive Panamera 4S, and the Panamera Turbo will be on sale in the United States on October 17, 2009. The MSRP for the Panamera S is $89,800, while the Panamera 4S and Panamera Turbo retails for $93,800 and $132,600, respectively.