Safety cars, another pointless and futile thing in GT games. Even IF they were actually used and deployed in game why would anyone actually think that the AI would obey them given their track (excuse the pun) record with obeying flag rules?
And IF PD actually implemented safety cars where would that leave their precious "catch the rabbit" races?
Nah, never going happen I'm afraid. We need safety cars as much as we need more GT86/BRZs ;-)