I once had this super real dream of me sitting in the back of a car and getting slammed into on the right by a car running a red light. In my dream I "woke up" in the wreckage and tried to find my way out of the rolled car. It was in first person and I saw my mangled arms as I crawled through. I even had blurred vision and hearing and faintly heard the sirens of an ambulance or police car or something.
My god, that was one of the most realistic dreams I've ever had and I was paranoid to ride in a car for a week.