Did the Zodiac killer actually play Hurdy Gurdy Man in his car while he murdered Darlene Ferrin?

There is no definitive evidence to prove that the Zodiac Killer played "Hurdy Gurdy Man" in his car while murdering Darlene Ferrin. This claim stems from a 1970s police report that mentioned a witness hearing the song playing from a nearby car, but it has never been conclusively linked to the Zodiac Killer himself. The case remains unsolved, and many details surrounding the murders are still speculative.