6/6 Jeremy Clarkson ponders the future of speed machines in a world that is slowing down.
5/6 Jeremy Clarkson uncovers the story of sheer power, testing some landmark inventions.
4/6 Jeremy Clarkson discovers that the faster you go, the harder nature fights back.
3/6 Jeremy Clarkson sets out to discover how we've learnt to survive our love of going fast.
2/6 Jeremy Clarkson tries to learn why some excel at high speed and others don't.
1/6 Jeremy Clarkson explores the science and the appeal of rapid transit.