they aren't adding glass in Indiana...just stone...if there is glass in there, the workers threw in a coke bottle....I'd like to keep my tires....not rip they to shreads...can you imagine the hot days like you had, tar starts to get soft, glass doesn't....no, not for me...drainage, freezing and thawing kills roads...and if no base, weight will take it's toll...better we invent hovercraft, than this idea....but I could see portions of the road with inserts like these...giving warnings and such...