No widely documented origin is attached to this clip, so it is best understood through its label rather than a single film, show or viral moment. Short transit sounds like this circulate because they are instantly recognisable, easy to reuse and useful as scene-setting shorthand in short-form video. Creators tend to reach for them when a journey, delay or everyday commute needs a quick audio cue, and the specific number gives the joke a concrete detail that a generic vehicle sound would lack. That practical, repeatable use is why the clip keeps appearing in edits long after its first upload.