This one's been beaten to death, but here's what I believe to be true: Diablo was in Japanese version because PD got permission from a private owner to put in his car. Unfortunately, this guy wasn't in a position to give permission to use the name (Diablo) or likeness (car appearance). PD caught hell, and it was axed before GT3 came out in America. So don't worry Europe, America didn't get it either. Personally, I don't give a rat's @ss...