Ask HN: Is this a billion dollar business idea?

There was a post today about selling space on municipal vehicles for AVLR systems and gas sensors. I was reading this and thinking, how do we generalize it? How about a portal for municipalities who can register and search for monetization opportunities? Then I wanted to expand this further. I want to connect Companies-Who-Want-To-Do-Wardriving with Uber-Drivers-Who-Want-More-Money and also with Cash-Strapped-Municipalities.