SC300/400 and 430 are NOT even CLOSE to sportscars..they are merely sporty coupes. In fact, the SC430 is a poseur car made for women.

Luxury performance market simply equates to competing with the Ferrari 599, Audi R8, etc etc...

I agree with you on the 4 door concept, but that would be more a competitor to the BMW M5, Mercedes E63, Audi S6, etc etc for the 80 grand.