First off, I am in full agreement with all preceding reviews. And I wonder why I haven't seen (in last eight months) any media promotion, a commercial or even a simple ad for this sophisticated competitor to the Lexus, Infiniti, BMW, and Benz types. Incidentally, there isn't even any dedicated 2008 STS Forum on Edmunds yet! The only three minuses on the car are the lack of space inside "for stuff" (where to put glasses?), small trunk and overcomplicated nav system, which is, in fact, inferior for instance to the 5-year older 2003 CTS system.
Comfort, elegance, performance, price.
Make the nav more user friendly, enlarge the trunk as well as interior glove compartment, console box, etc. And allow more functions access while driving, particularly the bluetooth telephone.