Dreaming of a car crash is not a figurative metaphor that is predicted to happen. The dream interpretation of a car crash is that you are facing a threat and your inner consciousness is anxious for you. The car crash image serves to warn you to prepare for a bad situation. Taken literally, it can also mean you should learn to help yourself by taking some first aid lessons. Just in case you are in a car crash, or need to administer first aid to someone who is in need of it.