You know, everyone always says hookers and blow, so I'm going to be different and go with cocaine and prostitutes. In all seriousness, I think ground signs, even strategically placed, have little to no effect on someone who's trying to carry on a conversation, do their hair, and narrate Spongebob to their little toddler army in the backseat of the Suburban. I think radio might be more effective. I also seem to recall as early as the beginning of this season they had motorcycle awareness signs posted on the highway traffic monitors. I don't care who you are or what you're doing, most EVERYONE looks at those things. It might not be a bad idea to see if we can coordinate the radio spots with the sign postings. However, this would probably involve a unified slogan of some sort, and this is where I defer the floor to someone who's a little more creative and much less of an asshole than me.