how long will it take me to get to the post office from here if i leave now
[IN:GET_ESTIMATED_DURATION how long will it take me to get to [SL:DESTINATION [IN:GET_LOCATION [SL:CATEGORY_LOCATION the post office ] ] ] from [SL:SOURCE [IN:GET_LOCATION [SL:LOCATION_USER here ] ] ] if i leave [SL:DATE_TIME_DEPARTURE now ] ]