Season 5 Episodes20
Cast2

Rupert Degas

Robert Llewellyn
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Ranked #19 of 20 in Season 5•−0.5 vs season avg
The technology behind high-speed trains; manufacturing ballpoint pens.

Rupert Degas

Robert Llewellyn
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"High-Speed Trains, Ballpoint Pens" is episode 17 of How Do They Do It? season 5. It scored 6.8/10 from 13 votes, ranking #19 of 20 episodes this season (season average 7.3). It aired on March 27, 2008.