Cottonwood:
Hey I have an idea. Painter's masks with filters. The perfect solution for riding in traffic!
When I lived in WVC, I used to ride alot down the road behind the college (2100 west, maybe). I quite often encountered a guy that was an obvious commuter (flannel, pants with cuffs, panniers, etc). He also wore a heavy duty filter mask. I finally caught him going the same direction one day (usually saw him going the other way) and asked him.
"Smog."
Hhhmmm....
I just don't see how any smog along the road could be any worse than anything else in the valley, but I'm an uneducated fat-ass, and probably just deserve to die from toxin inhalation, anyways...