I'm a reader. Even when I'm driving, I'm a reader. So I notice bumper stickers and license plates to what I am told is an unusual degree. So, I can say with a great deal of confidence that there were a far greater than average number of "arts" and "environmental" license plates in the lot when I dropped Jonathan off for rehearsal last night. My van was the right choice for the evening, since it sports the environmental license plate, supporting the Indiana Department of Natural Resources.
Specialty license plates in Indiana went through a boom a few years back when the regular plate was ugly. Now, with a more attractive regular plate, and the "In God We Trust" option, you don't see as many specialty plates around, so the concentration of them in that parking lot showed me that these were people who would put their money where their mouths were.
Of course, bumper stickers are the most obvious car speech. I'm noticing a trend.
The Obama/Biden hopeychangey bumper stickers are disappearing. Quickly. There are cars that I recognize because I see them often that have recently dropped them. I've noticed that the saturation in the campus parking lot is way down. What does this mean? Buyer's remorse, maybe? I'll continue watching this trend.