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my daughter jennifer posted this in facebook. i thought it could use a little exposure.

of course, i had to put in my two bits…
"this is great. but would these roads really stand up to a year of eighteen wheelers.it's great thinking though and would be worth the cost in urban areas… the whole 'crosswalk in the dark' angle and the powering electricity; at least in sunny states. very interesting jen. i'm going to post this in my opera blog." thanks for sharing.
about a minute ago.like

another point…. glass is made from sand therefore an abundant supply is available everywhere.

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