by Israelite Wolfman » Sun Jan 13, 2019 1:32 pm
They had a few minutes (IIRC some source claimed 8 minutes, the other 12) to share a ride together, it is likely that they've had a chit-chat along the way, probably to lure Stine into lowering his guard/suspicion of the stranger he just picked. I don't think zodiac was too calm before he got to the cab and asked Paul Stine to take him to Washington and Maple, he was probably stressed about this whole new situation that was 180 degrees different than his usual M.O. of surprising couples in a secluded areas. Must have had second thoughts about if he can pull it off before going brazen in the last minute.
I can see Paul asks him, shortly after starting to drive, if he's from San Francisco to break the ice, zodiac reply that he is but not from the destination he asked him to take him to, then ask Paul if he's also native to town, after Stine replied the next question by Paul would be "what brings you to Presidio Heights?", zodiac will lie that he has some social stuff to do there (party, etc.) while in fact he has a parked escape vehicle waiting for him near the Julius Kahn Park, after he had examined and studied the area for a while in advance before going to murder someone out there and securing his escape route with a snatch of the victim's clothing to prove them "pesky" reporters he is the killer of all prior victims as well. They will continue to chat, probably about family/marriage (Paul: "are you married?", zodiac: "no.. are you?", Paul: "Yeah, I have a baby daughter", zodiac: "good for you", Paul: "Sorry if it was out of place, thought that you were", zodiac: "don't worry, nah, it's alright.. am not 'the marriage type', I like my quiet", Paul: "I hear ya.."). Then uppon arriving to Washington and Maple, he will begin to change his tone, perhaps even expose his gun at Paul Stine, telling him that he want him to drive one more block down the hill to Washington and Cherry, when Paul parks zodiac will confess to him that this is not a robbery and will ask him "if he heard the news about the zodiac?", when Paul will be sweating in fear and replying, I can see zodiac looks at him and tell him that he is the zodiac, and then pull the trigger. The noise of the shot will draw the Robins teens to the window and the rest is history.