“The driver of the van made an illegal U-turn and ran a red light doing it,” said Officer Jerry Nicely of the Pleasanton Police Department. An officer tried to make a traffic stop and then it spiraled from there. In Dublin, police said, the suspect drove into an apartment complex on Dublin Meadows Street — a dead end. Rather than resign himself to arrest, however, he then tried to escape by twice ramming the police vehicle pursuing him, officials said. When that was unsuccessful, he drove forward, catapulting the van through a chain link fence, over an embankment, and into Alamo Creek, near the Iron Horse Trail, officials reported.