What does it mean when you have a dream getting hit by a car and wake up bleeding?

maybe you sleept walked in your sleep and hyrt yourself but you was trapped in your own mind you didnt wake up and took yourslef to bed

The dream itself is a reaction to being injured in your sleep. If you sleep with a pet, you might have been scratched or jabbed by a claw , or you might have brushed against a sharp place on your bed. In any case, when the injury occurred, you were in one of the deep stages of sleep. Your mind constructed the dream of being hit by a car as a way to explain the sudden pain.