Effects of Humidity on Cars in Alkhobar/Dammam & Jeddah?

Someone told me that we should always avoid buying cars from Dammam/Eastern Province and Jeddah (Cities close to Ocean) because Humidity really effects the bodies of the cars?

I myself live in Riyadh and dont believe this myth TBH. Your views would help in affirming my belief :)

Never knew humidity can effect body of the car. I have only heard about humidity can effect engine performance.

never heard of this.. maybe consider about effects on your electronic gadgets...