Pavement that eats pollution

What if the roads we drive on could eat pollution, sucking in dirty air like a sponge and releasing only nontoxic gas? Sound like science fiction? Well, roads like this are under development in Italy, thanks to a new cement called TX Millenium. A story on the road tests just appeared in the Italian on-line publication Ansa IT. Think what this would mean to Southern California, New York City or places like Mexico City. Your comment?