Are there any 6 owners out there who have to park in an open air parking ramp on a daily basis? If so, perhaps you have some experience with this or anybody that has had this happen to them. The photo is of some water spots that showed up on the hood of my 6 one day. I assumed it was from water that dripped from the upper level of the parking ramp. We just had a stretch of a few warms days here in Wisconsin so stuff started to melt and everybody's car gets that white winter salty/shitty grime on everything. Anyway, this stuff just looked like it had dripped over night and I didn't think much until I tried to wash it off. This stuff DOES NOT want to come off. I washed my carat a brushless place twice but that didn't work. Now some stuff dripped right on my windshield the other day and that too will not come off. Any ideas on how I can get it off? Am I wrong in thinking this is just some stubborn ass salt/water combo? I tried scraping the stuff on the windshield with my fingernail and it comes off but it is very difficult. IN all fairness I did all of this in cold temps.