What are the yellow spots on my car that sits outside.Birds,Bees,air pollution? San Diego,CA?

A friend 5 miles away has the same experience.What are the yellow spots on my car that sits outside.Birds,Bees,air pollution? San Diego,CA?
How big are these yellow spots and how close are you to coniferous or pine forest?





We had a similar problem to this in South Dakota about this time of year as well. The ponderosa release millions of pollen spores, covering everything in a yellow dust, looked at closely you see yellow spots. They can travel like a cloud for many miles.





EDIT: with the information you sent me this seems like the most probable cause:





Actually after some research and your more adcanced description I'm almost positive now that it is caused by bees, check out this article focused on the Southern California area:


http://articles.latimes.com/2007/oct/31/鈥?/a>