With up to 400 trains a day running on its 62 miles of track, the channel tunnel is the busiest railway system in the world. And doing things at the double is key to its success. |
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Title: | At the Double | |
Air Date: | September 4, 2019 | |
Runtime: | 30 min | |
KathyC : So emotional to see someone shoot for such a big dream, I choked up many times.