Water spots
 

Any one ever had to deal with water spots

Yep. Depending on how bad they are, usually means breaking out the buffer with polish and applying elbow grease. But if it is just a sort of crust from evaporating water leaving residue behind, you might be able to get them out just using a clay bar. But if it was water droplets used as magnifying lenses after the sun popped out to burn a mark in the paint, then yeah, polishing time with some work involved.