Exaggerate the subtle deformation of the chassis in these ways

There could be more imperfections in the structure of the chassis, and the chassis would be heavier than it really needs to be, making the car uncompetitive. Like carbon fiber materials, FEA was first used in the aerospace industry and then adopted by F1 designers. The most famous FEA software used in F1 is PTC's Pro/MECHANICA, which is used by Ferrari.