On May 29, 10:44 pm, Takatsugu <[email protected]> wrote: > I am thinking to create a database of driving distances and times > between 10000+ pairs of zip codes in the US. > according to http://www.census.gov/epcd/www/zbp_base.html there are over 40000 zip codes in the US, so there's at least 40000x40000 pairs (assuming directions from A->B might be slightly different from B->A, due to one-way streets) which would take over a thousand years to process at the limit of 2500 directions web service calls per day???
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