[sigmoid10]

Sound design is an important part for many other manufacturers. There are literally people who's job it is to make sure that things like the "thump" of a closing door sounds good and on-brand. Though to be fair it's kind of an outgrowth of legacy car manufacturers who need to sell tiny bits of progress to stay relevant.

[dmix]

You mean when you physically close a car door they might shape the internal sound dynamics in either the frame or inside the door or adding some surface layer to the door itself?

[fragmede]

Both, and more. The hardware/software in the latch itself gets tuned to make the "thump" the "thump", and not a "thunk".