Jenny Cooper had a projectile thrown at her windscreen from an overpass on the Sunshine Motorway. Picture: Patrick Woods. Maroochydore Police Station Sergeant Melinda Pyke condemned the behaviour and said officers were investigating. Having seen the photos, it was a significant smash, obviously a large rock or brick, Sgt Pyke said. It s very dangerous behaviour and it won t be tolerated. Sgt Pyke said the Main Rd overpass did not have CCTV cameras and that police did not yet know of any witnesses. She said the most recent incident of a like nature was at Maroochydore in November where a group of juveniles threw rocks at a jet ski causing it to crash.