i had this idea
what if somewhere in the garage you could add a upgrade that gives you the capability to mix panels with other panels door’s with other door’s bumpers with other bumpers and tires with other tires and etc.
for example you can mix an insulated door/panel with a lead-plated door/panel so you get better protection against radiation and electricity damage and or you can mix a armored and or an olympium door/panel with with a lead-plated insulated and anticorrosive door/panels so they last longer than they usually would and it would cost a little less of the materials to mix them.
so cheap easy to find materials would stay the same amount and or be a tiny bit more expensive just by a margin of 1 or 2 but hard to find materials like thermosap and olympium would go down by the same amount.
i left out headlights but it’s kinda just self explanatory same thing with tires
i would like you’re feedback on it and if anyone had any ideas with other parts that would be useful when they are mixed.