This quote beautifully encapsulates a moment of pure exhilaration and the joy of embracing the present. The metaphor of a big train rolling down a hill captures a sense of unstoppable momentum and freedom, where worries and hesitations momentarily fade into the background. When the author speaks of not believing their luck, it highlights the rarity of such unburdened moments — times when life's pace quickens and the experience itself becomes the sole focus. This reminds me of those fleeting periods in life when everything aligns harmoniously, and we are carried forward by excitement and optimism, detached from ordinary concerns or fears. The sensation of 'going fast' transcends mere velocity—it suggests immersion in the thrill of life, the rush of opportunities, and sometimes the vulnerability that comes with surrendering control. There is an element of innocence and celebratory recklessness in the way it's described, resembling the carefree spirit of youth or the unfiltered joy found in adventure. Yet, underlying this is a subtle acknowledgment that such moments are transient. The quote invites reflection on how we can find value not just in the outcomes but in the experience itself—the feeling of aliveness that propels us during these heady times. Ultimately, it speaks to human desire to capture and prolong those vibrant instants where fortune, motion, and emotion converge seamlessly.