A carriage made from a pumpkin is read as transformation that has a deadline. Tradition sees it as a chance to shine, and awareness that the magic may be temporary.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.