Rust is caused by oxidation of metal - primarily iron. Most cars are made of steel and so contain large amounts of iron. Although pretty resilient to corrosion, all cars will eventually experience rust if they are continuously exposed to moisture. Salty water from sea spray or salt on roads can speed up this process. click here or on the NFT to collectRust doesn’t look good, however this is not the only reason to worry about rust on a car. If you do not treat it, rust will continue to spread ...