Comment by SoftTalker
6 months ago
More and more, cars are not built with repair in mind. At least not as a top priority. There are many repairs that now require removal of substantial unrelated components or perhaps the entire engine because the failed thing is just impossible to reach in situ.
Nuts and bolts are used because they are good mechanical fasteners that take advantage of the enormous "squeezing" leverage a threaded faster provides. Robots already assemble cars, and we still use nuts and bolts.
Cars were always like that. Once in a while they worry about repairs but often they don't, and never have.