would have an actual lead by this time if a cab was still around somewhere in southern California. He has probably done for more searches than anyone else that comes to mind.
I'd like to wish that were still possible that a cab or pcb can be found, but I doubt it. It probably received similar treatment like this familiar movie scene.
Time to paraphrase Pack's song: That Cab[upright] is Gone
"Ohhh. That cab is gonnnnne. It is gonnnnne. It doesn't matter whether it is really right or wrong. But....ohhhhh that cab is gone. It is gone. For very, very, very, very long."