Bus Roaring Sound

The audio begins with the deep, resonant sound of a bus engine starting, a sound that seems to echo around an empty space, suggesting a large environment. The engine's noise is reminiscent of a growl, a low, rumbling sound that continues in a loop, unchanging in its steady rhythm. The bus's roar is surprisingly vocal, almost as though the machine itself is alive. It seems to speak in its own mechanical language, a voice that fills the air with its powerful resonance.