I've been told the various air deflectors, including the one unusually mounted on the windshield's header, are designed to help route airflow over the heads of rear-seat passengers. Nifty, but from where I sat (behind the wheel), I didn't really notice much difference. Same goes for the Airscarf feature -- my jacket has a tall collar, which blocks airflow unless I raise the headrest to its tallest (and most uncomfortable) position.
As Don suggests, the E350 is most assuredly a fashion statement (and a beautiful one at that), but its price tag is virtually a dead ringer for the asking price of an Audi S5 Cabriolet, which is a little more engaging to drive and almost as sumptuous inside. Better yet, you're also given all-wheel-drive, which makes it a more of a true four-seasons convertible than a series of air deflectors.
Evan McCausland, Web Producer