it is because they are a malluable, waterproof, good conductor of heat metal.
The ferrous metal commonly used to make car bodies is steel. Steel is chosen for its strength, durability, and formability, making it ideal for providing structure and protection in automotive applications.
Steel
It is cheaper and easier to manufacture than aluminum, fiberglass, carbon fiber or stainless steel bodies.
car bodies are made of steel alloy that contains iron and carbon.
by casteing together of iron and steel
This has not happened yet.
so they don`t get damaged as easily
galvanized steel and plastic
Rust, rot, cancer,
Galvinised mild steel,
screws nuts and bolts and car bodies
nails, screws, nuts and bolts and car bodies