Dreams often reflect our subconscious thoughts and feelings, and your dream appears to deal with themes of fear, entrapment, and the struggle for freedom. Here are some possible interpretations:

1. Fear and Anxiety: The presence of the demon partner suggests that you may be grappling with fears or anxieties in your waking life. This could relate to a situation or relationship that feels controlling or harmful.
2. Struggle for Independence: The act of trying to escape by driving symbolizes a desire for independence and autonomy. The difficulty you experienced in starting the car may represent challenges you feel when trying to assert your own will or make decisions in your life.
3. Support Systems: The encounter with the demon's brother in the pharmacy may signify the importance of seeking help and guidance. Pharmacies often symbolize healing, so this aspect of your dream could reflect a need for support as you navigate difficult circumstances.
4. Resilience: The concept of "respawning" suggests resilience and the ability to try again despite setbacks. This may indicate that you possess inner strength and determination to overcome obstacles.

Overall, this dream may be encouraging you to confront your fears, seek support from others, and acknowledge your strength in facing challenges. If you feel comfortable, consider reflecting on any situations in your life that might resonate with these themes and think about steps you can take towards gaining more control and support.