english: Imagine: you're driving home late at night, when suddenly, there's a friendly police officer who asks you kindly but firmly to pull over and blow into a device like this one.
non_english: Zamislite: vozite se kući kasno noću, kad odjednom, prijatan policajac vas ljubazno, ali odlučno, zamoli da stanete i da duvate u napravu sličnu ovoj.