Go with the Clouds, North-by-Northwest

Story

The story takes place in Iceland, at land’s end, 64°N. Kei Miyama is a 17-year-old with three secrets: he can talk to cars, he can’t handle pretty girls, and he works as a private investigator. One case has him searching for a beloved dog, another involves reuniting a woman with a man she fell for at first sight. And then comes a case that strikes close to home—searching for his own little brother. Tag along as this globe-spanning journey unfolds… (Source: Kodansha USA) Notes: -Nominated for the 12th Manga Taisho Award in 2019. -Includes five extra chapters.

Synopsis via AniList (English).