Dreams about driving often relate to your sense of control in your life. In your dream, losing control of the car suggests that you may be feeling overwhelmed or unable to manage certain aspects of your waking life. The round-about can symbolize a situation where you feel stuck or unable to make progress.

Driving through a brick wall might represent a sudden realization or a crash of expectations, indicating that you might be facing obstacles or challenges that you did not foresee. The fact that no one tended to your wounds could reflect feelings of isolation or neglect in your life; perhaps you feel unsupported during difficult times.

The angry reaction of the person whose flowers you ran over could symbolize feelings of guilt or concern about how your actions affect others. It may be worth reflecting on your relationships and whether you feel heard and cared for by those around you.

Overall, this dream may be urging you to assess your current situation, acknowledge your feelings of being overwhelmed, and seek support from others. Consider reaching out to someone you trust to share your feelings and experiences.