Rusting.
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
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.
This has not happened yet.
so they don`t get damaged as easily
galvanized steel and plastic
Galvinised mild steel,
Rust, rot, cancer,
screws nuts and bolts and car bodies