I worked in aerospace for six years before changing into automotive. The difference could not be bigger. In aerospace cost didn't matter a lot and many things

I worked in aerospace for six years before changing into automotive. The difference could not be bigger. In aerospace cost didn't matter a lot and many things are custom built, even down to custom alloys and materials. Also the amount of planning, numerical analysis, simulation, preparation and especially testing is insane. Project timelines are sometimes more than a decade. In automotive 'cost down' is the mantra and is often enough measured in fractions of cents. Almost nothing is customized and parts reused for different product lines whenever possible.