Santa Cruz, CA, has only one billboard iirc, coming over hwy 17 from the Bay Area. I never appreciated how this muted the pace of advertising exposure until I spent time in other parts of the US where such things are less regulated.
Multiple serial killers killed a bunch of people there at the same time in the 70's, which gained them the murder capital label. And this was spray-painted on a billboard in Lost Boys which was filmed in Santa Cruz, though of course the cause there was vampires.