>> this is a crime which is unexplainable. i have never seen it before. >> reporter: investigatoring are calling it a classic case of road rage. >> this should have never happened. this is a complete disrespect of human life. >> reporter: it happened around 3:00, tuesday afternoon on westbound interstate 40. albuquerque police say two vehicles cut each other off. >> the daughter is not conscious. >> reporter: the deadly incident unfolding over two miles. they believe the suspect pulled up and fired multiple shots. at least one bullet, striking lily. her 7-year-old brother was in the truck but was not injured. >> the caller says his daughter is breathing. >> reporter: a passing department happened to spot the red truck pulled over and stopped to help. others driving by called 9-1-1. >> it looked like some sort of medical emergency. it's not an accident, but there's an adult holding what