Prosecuting attorney Jessica Blanch gave a factual basis for the pleas: On the night of Oct. 4, state troopers drove to eastbound I-96, near the Old Plank Road overpass in Lyon Township, because of a personal-injury crash. At least one sandbag crashed through the windshield of Livonia resident and Plymouth art gallery owner Cindy Eckley. She would tell state troopers that she saw a man throw the sandbag. Another person alerted police that night. He told law enforcers that he had just delivered a Brighton man named David Garcia to his home. He had picked Garcia up near Old Plank Road and Grand River Avenue. Garcia told the driver he dropped a sandbag off the overpass and hit a car after blowing a tire on the highway.