Thank you for sharing your dream. Dreams often reflect our emotions, experiences, and subconscious thoughts. Let's break down the elements of your dream for interpretation.

1. Music Influence: Starting your dream with music you listened to earlier suggests that your waking experiences and feelings are influencing your subconscious. Music can evoke emotions, memories, and thoughts that may be relevant to your current life situation.
2. Car Dynamics: Being a passenger in a car controlled by your mother could symbolize feelings of dependency or a desire for guidance. The fact that a stranger took over the driver's seat may represent feelings of loss of control in your life or unexpected changes that you are facing.
3. Intruder Symbolism: The intruder who sits in the driver's seat could symbolize a fear of external threats or intrusions in your life. Your calmness in the face of this situation may reflect your coping mechanisms or a sense of resignation to circumstances beyond your control.
4. Scratching with a Card: The act of the man scraping your leg with a card while you felt no pain could indicate a situation in your life where you feel threatened or vulnerable but are not allowing it to affect you deeply. This could reflect emotional resilience or a coping strategy to manage anxiety.
5. Mother's Collapse: The transition to the room with your mother and her subsequent collapse might represent deep-seated fears regarding her well-being or your relationship with her. The anticipation of her collapse suggests a feeling of inevitability about something distressing, which can be tied to anxieties about loss or grief.
6. Crying and Emotional Release: Waking up crying indicates that the emotions stirred by the dream are significant. It can signify a release of pent-up feelings or a processing of grief and anxiety related to your relationships or fears of losing loved ones.

Overall, this dream seems to touch upon themes of control, vulnerability, and emotional distress regarding relationships, particularly with your mother. It might be helpful to reflect on your current feelings towards her and any underlying anxieties you may be experiencing in your life. Consider discussing these feelings with someone you trust or a mental health professional if they continue to weigh on you.