Why it worked
The video likely worked due to the satisfying ASMR-like nature of the cleaning process, combined with the dramatic before-and-after transformation of a heavily soiled vehicle interior. The use of various cleaning tools and techniques kept the viewer engaged.
Summary
The video shows a detailed cleaning of a very dirty car interior. Various cleaning tools and techniques are used, including spraying, brushing, vacuuming, and steaming, on the seats, floor, dashboard, and door panels.