Galvanized steel and zinc coated steel were only used from the 80s on in cars. Electrophoretic plating was mass adopted only in the late 80s. Before that the sl

Galvanized steel and zinc coated steel were only used from the 80s on in cars. Electrophoretic plating was mass adopted only in the late 80s. Before that the slightest scratch meant you could literally watch the rust build up.