When it’s time for a six-figure executive sedan where will you turn? One of the German stalwarts? Lexus, perhaps? Or maybe you want something more exotic, something Italian. Well, that’s where the Maserati Quattroporte comes in with its Ferrari-born soundtrack. Its look is understated elegance; sound: high-performance.  But the MSRP is served like overcooked rigatoni. According to insiders, an all-new Quattroporte is another 3 years away.