In another stroke of luck, Armond Pelissetti had ditched his patrol car at 9:58 pm and had traveled to the intersection of Washington and Cherry in his 'time machine', that could bend the laws of physics. He instantaneously landed at the intersection of Washington and Cherry, didn't spot the teenagers on the street, didn't usher them back to their house, didn't check on Paul Stine, didn't retake the suspect description, and didn't get on the radio and update other officers. He bypassed all this, immediately exiting his 'time machine' and traveled cautiously at an average walking speed of 3.26 feet a second up Cherry Street, to meet Donald Fouke in 90 seconds. In fact, after landing his 'time machine' at the intersection of Washington and Cherry instantaneously at 9:58 pm (the moment he received the dispatch), the teenagers pointed Zodiac out to him, just approaching the intersection of Jackson and Cherry.

Looking at it another way- if Zodiac had left the crime scene at 9:56 pm, and was spotted by Armond Pelissetti at 9:57 pm at Jackson and Cherry, then Armond Pelissetti had traveled back in time. He received the radio broadcast at 9:58 pm and was at the crime scene a minute earlier at 9:57 pm, with negative traveling time.
If Armond Pelissetti had abandoned his 'time machine' and took just one minute to arrive at the crime scene, exit his vehicle and be approached by the teenagers, who pointed out Zodiac nearing the top of Cherry, then the time would have been 9:59 pm. Unfortunately though, Zodiac had a superior 'time machine', because he was simultaneously spotted by Donald Fouke at the intersection of Jackson and Maple at the identical time of 9:59 pm. A 1 minute 42 second discrepancy, starting the clock from zero. The Zodiac Killer had quantum leaped one block east on Jackson Street.
But hang on - if Pelissetti spotted Zodiac at 9:59 pm, then Zodiac should have arrived at the intersection of Jackson and Maple around 10:01 pm, where he was spotted by Donald Fouke. However, that would mean that Donald Fouke traveling at 35-40 mph, must have taken 3 minutes for a 1 minute journey from the intersection of Presidio Avenue and Washington Street - or got lost in the mist of time.
In 1969, Armond Pelissetti was an avid reader of novels such as the 'The Time Machine' by Herbert George Wells, a dystopian post-apocalyptic science fiction novella. Pelissetti had experimented with many different time-traveling designs throughout the 1960s, until the summer of 1969, when he perfected the ultimate time traveling machine, stored in his basement for 'Back to the Future use". Sitting in his time machine one mile east of the crime scene, he was able to reach Washington and Cherry at 9:57pm, 1 minute before the radio broadcast, to see Zodiac at the intersection of Jackson and Cherry at 9:57pm, who then walked to Jackson and Maple by 9:59pm, to be spotted by Donald Fouke (one minute after the radio broadcast at 9:58pm). But the Zodiac was one step ahead as usual. In fact, the Zodiac Killer had taken "one giant leap for mankind", superseding the achievements of Neil Armstrong three months earlier. The radio broadcast at 9:58pm had Pelissetti arriving at the crime scene at 9:59pm, spotting Zodiac at the top of Cherry at 9:59pm. However, the Zodiac Killer had achieved more than one small step for man, taking one giant leap from Jackson and Cherry (9:59pm), to nearing Jackson and Maple (9:59pm) in zero seconds. The Zodiac Killer had brought the fiction of H. G. Wells into the heart of San Francisco, and warped the very fabric of time.