Real-Life Ad Blockers
We could have had this, really.
It could have been the killer app for Google Glass - something that detects ads whether on billboards, backsides, or buses, and on-the-fly replaces them with more pleasing images - nice landscapes, beautiful women, specialist pornography, or a combination of all three.
For driving, it could just replace the ads with flat beige, to reduce distraction.
...but no, the word "Glasshole" was too tempting, and our urban views continue to be polluted by idiotic branding and the effluent of marketers' minds.