This dream may symbolize a sense of fear or unease in your waking life. The concrete/pipe area represents a difficult and potentially dangerous path you are navigating. The desert area may represent a feeling of isolation or emptiness. The 18 wheeler with gasoline could represent a volatile or explosive situation that you encounter. The fact that it falls and explodes could suggest that this situation has already caused damage or destruction. However, the fact that you keep walking could indicate a sense of resilience or determination to keep moving forward despite the challenges. The dream may be trying to warn you about potential dangers or obstacles in your life, and the need to be cautious and prepared. It could also be a reflection of your inner fears and anxieties, and the need to confront and overcome them. Overall, this dream may be a reminder to stay strong and keep pushing through difficult times.