It’s the universe’s lullaby, the hush between heartbeats. In the quiet, that engine hum feels like a distant echo of a dream, almost like the world is taking a breath, slow and soft. It makes me think of wandering through a moonlit city, where every shadow is a story and every engine’s sigh is a whisper of the night’s secret. I get lost in that sound, and sometimes I wonder if it’s my own thoughts humming back at me.