Everyone has tried it here and there. Honda elements have replaceable fenders iirc, but it doesn’t change the math. You can be lighter and cheaper if you don’t

Everyone has tried it here and there. Honda elements have replaceable fenders iirc, but it doesn’t change the math. You can be lighter and cheaper if you don’t plan on swapping panels out. Body shops are pretty good at what they do. Fancier cars like McLaren go the entire opposite direction. Some panels have no way of coming out at all they are part of the carbon tub, other panels must be cut out with a knife because they don’t bolt on anywhere.