For the highly insolvent state of California, such ad-bearing devices could generate a good deal of revenue. For drivers, they could generate a whole new source of distraction on our already media-saturated roadways. But in heavily gridlocked places like California, it could provide a fast means to disseminate important information quickly and even provide emergency instructions to drivers who regularly deal with natural disasters like mudslides, wildfires, and earthquakes. And don't worry, Los Angelenos: You'll still be able to advertise your ride as "SMOKN" in between the paid messages.