Place it at the end of a departure scene, just after the character turns away from the camera. For a comic beat, follow it with a vine boom, or lead into it with a door knocking cue when someone arrives before leaving again.
このサウンドについて
This is a brief recording of a car door shutting, captured in under a second with the solid thud of the latch catching as the panel meets its frame. It feels abrupt and final, like a conversation ending without another word, and it works best as a small punctuation mark that makes a departure feel definite and a little dramatic.