No? Puppet happened because the security one merged with the dead child, and Golden Freddy gets given life as shown in the mini game. In Freddy’s list, it said limited possession.
Okay? So that means Freddy wouldn’t be able to possess anything else then? That’s agreeing with me.
Let’s say Freddy’s spirit will be able to enter the car that has none of the things needed to capture a soul, what then? Freddy won’t be able to move it, it doesn’t have an endoskeleton. If you interpret the poster being changed as Freddy possessing it, then clearly has never moved around. That’s why Golden Freddy hasn’t moved either, the costume doesn’t contain an endoskeleton.
“Follow me” Animatronic follows the entity, then William suddenly comes out. Pretty sure that means it was someone wearing a costume to lure the animatronic.