Sentence 1: Cleo was driving in the car with her mother. 
 Sentence 3: At first she thought it was music from a nearby car 
 Sentence 4:  Then she thought it must be a mechanical issue with the car 
 Sentence 5:  It turned out to be the suction from the tip of her water bottle 
 Option 1: She started hearing an intermittent raspy popping sound. 
 Option 2: They heard a loud banging noise.