To dream that you are at a park represents a temporary escape from reality. It indicates renewal, meditation, and spirituality. You may be undergoing a readjustment period after experiencing some serious personal conflict or an end to a passionate affair. 

To dream that you are lost in a park indicates your struggles with your career, relationship, or other problem. You may feel alienated by society.

To dream that you are parking your car represents your desire to settle down. Alternatively, it means that you feel accomplished in your goals and satisfied with your life. If you have difficulty parking the car, then it means that you are in some sort of a rut. You are feeling restless. Perhaps you wished you had taken a different path in your life. 

To dream that you parked your car in a non-parking zone, suggests that you are poking your head in places where you do not belong. If you forgot where you parked, then it indicates that you have lost your direction in life. You are going off track.