Cyhenna,
The dream you've shared, with its intense feeling of panic and the vivid image of the lone bright Target store, suggests a sense of clarity or direction amidst a situation that feels chaotic and crowded. The tightly packed cars symbolize a pressure or lack of personal space in life that might be overwhelming, where it feels like every move is restricted or predetermined by external forces, much like being on a railroad. This can reflect feelings of being trapped in a situation or relationship, or even societal expectations that you're struggling to navigate.
The fact that you're urging your dad to escape, yet he ignores you, might indicate a feeling of frustration or helplessness when it comes to authority figures in your life. It might also point towards a desire for protection or guidance from your father that you feel you're not receiving. Your dad's role as the driver further emphasizes this, as he is in control of the situation that leads to a fatal outcome.
The impending sense of doom with the cliff and the broken railroad at the end could mirror an approaching life change or challenge that you're subconsciously aware of, but feel unprepared to face. The fall at the end of the dream could be the mind's dramatic representation of "hitting rock bottom" or fear of failure. This does not predict a future event but instead may symbolize a loss of direction or a transition that you're finding particularly stressful.
Given the emotional intensity of this nightmare, it's understandable that you woke up with negative feelings. While the emotions level is noted as a 6, which is significant, it's not at the highest end of the scale. Nightmares are often our mind's way of processing our deepest fears and anxieties, and it sounds like there may be elements in your waking life that are causing you stress, particularly around issues of control and progression.
If dreams like this continue or increase in frequency, or if they start to affect your day-to-day mood and well-being, it would be beneficial to explore these themes further, potentially through journaling or other self-reflection practices that can provide personal insights and ways to cope with these stressors. Your dream vividly illustrates the tension between progression and control, and acknowledging these feelings can be the first step in addressing whatever real-life situations may be influencing them.