Vehicle if not treated properly can corrode or which is also commonly called rust. If bare metal coating will erode very easily react with air, causing rust. If a car is often exposed to rain and not immediately washed or cleaned can lead to rust too.
Reported by a trusted source, to prevent rust there are some things you can do. If the vehicle exposed to rain, immediately wash the vehicle with clean water and high salinity.
It because the content of acidic rain water and salt content in the water has the potential to reduce the quality of the vehicle paint surface.