Invaluable stuff! Too bad there isn't a more clear photo of that Mustang interior, Ken could really use that right now for his '89 SMPV resto. One of John's retired CHP buddies who came with him to the Ripon show last weekend worked out of the Hayward office and told me he clearly members a white early Mustang test unit that was assigned there.
From this document I can now identify these SMPV photos as being the Oakland office test units:
