Fairly early in my career, I had the very good fortune to work for a company that bought brand new vehicles and very carefully dis-assembled them, tore them apart. Sometimes even to the point of cutting open the ROMs and reading the bits stored there with a scanning electron microscope (and then re-constructing the firmware). The team that did this, laid out all the parts on tables, they cut open sheet metal of the body and wrote detailed engineering analysis of the findings. Really fascinating stuff. Anyway, I got to see many, many automobiles this way. The Mercedes were always, far, far better than any of the others. Just amazing stuff. Caveat - that was in the 1990's. No idea what the current state of things are with modern vehicles.