A study of 2,000 drivers revealed top pet peeves when driving passengers include complaining, blocking mirrors, and reaching for an invisible brake. Other frustrating behaviors include throwing wrappers, fiddling with the radio, and watching loud videos on phones. The study found that 43% of couples' car trips end in arguments, with 17% of women considering their partner an annoying passenger. To address these issues, a temporary insurance provider is offering the world's first Passenger lessons to help improve passenger habits and reduce tension in relationships.