Winter Olympics: Can Tech Boost Performance?

Alasdair Keane visits the Olympic training centre in Oslo, to find out how advances in technology are helping Norway compete at the highest level. Paul Carter takes a ride on the first part of the UK's rail network to switch over to a digital signalling system. Shiona McCallum tests out a self-driving robotaxi in Las Vegas. And Jacqui Wakefield explores the research making self-driving technology safer and more inclusive.