Yes, I too believe this theory. During the summer, I have to leave early for work, and I get debris from this crap on my windshield every time they spray. I'll try and get some pictures of it this summer for you all to see. Its not noticable unless you're looking for it, but it looks like very fine spiderwebs. I know they aren't spiderwebs because they don't attach to the windshield.
I've heard theories that this stuff crystalizes during cold weather which would explain why this stuff disappears when it hits the sun. I don't want to say for sure that this is the chemspray, but it sure leads me to believe it since I only get this stuff when the trails are in the air.
I've also heard that there is Barium in this stuff as well. Interesting note, that is what hey put in you when you have an x-ray to see the insides of your body.
Anyways, that's my two cents, lemme know if you have any questions.
