If you have driven the 1-95 corridor, you will always remember the multitude of billboards for South of the Border.

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They have divided the 1, 200km-long corridor into different blocks and have accumulated vast amounts of data.

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He had come the way I had, from Xian, 1, 600km westward down the Gansu corridor between the wastes of the Gobi and the cold heights of the Qilian Shan.

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"These operators transport over 1, 800 passengers a day, up and down the I-95 corridor from New York to Florida, " LaHood said.

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