Ok so i lost my license for a few months and im getting it back in like 2 weeks and i let it sit in my back yard and the sprinklers have been leaving big water spots and calcium build up on my whole entire car but thats not the worst part my paints flat black so i cant use wax so what should i do should i use viniger on the whole car or is there something special i could use cause i dont want to start driving it again and have it look like crap. Help!