Were shots on 401 a case of road rage or a targeted attack?

Toronto Police have posted a dashcam video showing an incident in which the driver of a grey Hyundai apparently tries to block a Toyota SUV on Highway 401 near Highway 400 on Tuesday at about 2.30 p.m. As the vehicles finally speed away several shots are fired at the Toyota. Was this road rage or a targeted shooting? Anyone with information is asked to contact police at 416-808-2510.