About a minute into this interview you hear Gandini talk briefly about how the GT4 project came about. It's a bit short and not very revealing, but the rest is tremendous. He describes design processes behind the Miura, Diablo, Stratos. It makes me wonder what Fioravanti lost along the GTB/GTS production journey. At least he kept the black pillars on the GTS, something Gandini says was lost to costs on the Stratos.