In this audio, the prominent sound that captures your attention is of a bus preparing for departure. The engine rumbles to life, the loud and characteristic hiss of the air brakes can be heard as the bus edges forward. You can almost feel the vibration of the heavy vehicle as it sets into motion. The whine of its engine increases in pitch as it accelerates. Then, the audio shifts to the perspective of the bus on the move. You can distinctly hear the bus overtake multiple cars, the roar of the engine growing louder as it moves past each one. There's a rhythmic pattern of the bus engine's noise ebbing and flowing as it overtakes each car, intermingled with the faint sounds of other cars on the road. Throughout the audio, the sounds paint a vivid picture of a bus journey, full of hustle and bustle, leaving behind the city traffic and making its way forward.