Unless LA sometime made the Thibault a closed cab rig, I'd have to say that might be a movie truck.
Was proven wrong by a google search.
@miles451 That rig was ran by 98s 60259 1972 Thibault 100' Aerial Ladder Truck (closed cab) builder #462 Truck 9. Looks cool
So the only thing I can find about the stationwagons I sent you on discord. I found Johns photo, The one you sent, then the video of a Plymouth Satellite. Then found photos of the belvedere. So I can't find the caprice wagon anywhere else.