To dream of hitting someone or something means that you have suppressed anger and that you need to express this in a healthier way. It may also mean that you are forcing an idea or opinion on another person.
To dream of being hit, on the other hand, may represent a person who is angry at you. It may also indicate someone else forcing his/her beliefs on you. To dream of being hit specifically on the stomach represents sensitivity and hurt feelings.
Dreaming of not being able to hit suggests helplessness and powerlessness. This may refer to issues regarding confidence and self-esteem.
To dream of almost being hit by a car indicates a conflict in someone’s beliefs and goals with your own. It may also represent a bruised ego and a shocking experience. If the car that almost hit you in your dream looked like a cat, then you may be a hindrance in the achievement of someone’s goals.