It is well known "pop science" that there is hardly better emergency product against rust than Coca-Cola. I have known for decades that meat dissolves in the black drink in just hours.
These are not the only effects: the soda drink also dissolves bones, iron, etc. In fact it is a main cause of osteoporosis among the young because it "steals" calcium from the bones.
The reason is one of the "secret" ingredients of this extremely popular beverage: phosphoric acid (E338), which has a Ph of just 2.8 (hyper-acidic) and is indeed corrosive. The raw ingredient must be carried in transports holding the warning of dangerous chemical.