Pride of place on Porsche's stand is the new Panamera sports saloon that made its world premiere today at the Shanghai Auto Show. The five-door model that can seat up to four-passengers will compete head on with Aston Martin's forthcoming Rapide and the Maserati Quattroporte. The Panamera, which was penned by Saab's former chief designer Michael Mauer -now you know who to blame- will be initially offered with two 4.8-liter V8 engines producing 400 and 500HP. Sales are set to begin in most markets in the fall of 2009. 
