Dreams involving ex-partners, especially those that include conflict or feeling trapped, can often reflect unresolved emotions or issues from the past. In your dream, the fighting and being trapped in the car may symbolize feelings of anxiety or fear regarding your past relationship. It could indicate that you still have lingering feelings of being controlled or overwhelmed by past experiences with your ex.

The car often represents your direction in life and how you feel about your journey. If your ex's driving was scaring you, it may suggest that you feel uncertain or unsafe about the path you're currently on, possibly influenced by past relationships or emotional baggage.

Consider reflecting on any unresolved feelings you may have about this relationship. It might be beneficial to explore ways to regain your sense of control and direction in your life. Journaling about your feelings or discussing them with someone you trust can help you process these emotions and find closure.