ROCHESTER, N.Y. – The trial for a man accused of killing a cab driver in Rochester has begun. The jury listened to opening statements Wednesday afternoon. Police say that David Porter, a three-time felon, got into a cab last April and violently attacked the driver, David Treese III. Porter is accused of repeatedly pistol-whipping Treese before shooting him. Treese ended up dying on the sidewalk on Bay Street after the shooting.