I had always heard smog originated in L.A. and blew east, but while driving in an industrial park recently I suddenly wondered if smog may actually be headquartered on 9th Street in Rancho Cucamonga. Around the corner of the building were the words “Smog Check,” so that answers that. By the way, I like California Smog’s cheerful colors (and the fact that the flowers get plenty of oxygen and sunlight).