How can I remove cement / sand dust from my car's windows and paint?

I live in an area where there is a lot of building / construction happening. It has become impossible to keep my car clean from the cement / sand dust. No soap or cleaners will take off the residue.How can I remove cement / sand dust from my car's windows and paint?
Try vinegar and a soft cloth.How can I remove cement / sand dust from my car's windows and paint?
Wash you car with Dawn Dish Detergent then use a claybar in small affected areas. This should clean away all contaminents in that area.