He finally confessed his guilt
As the evidence against him increased, his stubbornness began to crumble. He confessed, and the police theory was confirmed. The confessions revealed a baffling truth.
The return of the car to the same spot was not part a bigger plan but rather a result of sheer excitement at driving fast. He thought he was invincible and, if he feared he might be caught, he drove his car into the water to wipe out any evidence. His plans were ruined by the events of that night, which led to his arrest.
