"Here with your daily dose of infrastructure porn is XKCD's Randall Munroe, who's gone and rounded up all of North America's various subway systems and combined them into one big interconnected map," Robert Gonzalez blogs on io9.com.
Just makes you wonder: WHAT IF? There's more here including info on subway systems worldwide, etc.
Just makes you wonder: WHAT IF? There's more here including info on subway systems worldwide, etc.
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