Originally Posted by golfdude
Try applying distilled vinegar, yes, distilled vinegar onto the sections with spots on it using a sponge. Rub it in, let the vinegar sit for 30 to 60 seconds, and then rinse off with water. The vinegar will remove your wax, though, so don't forget to wax the areas that you treated with distilled vinegar. This technique also works with water spots.
Yep, that will do it... worked wonders on my wife's black Saab. It's a wonder no one has repackaged it and marked up the price like 10,000 percent and resold it. I think I paid $0.89 for a quart!
Good luck.
PS. You car will smell like a salad until you rewax it!