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Christian Wolmar is an award winning writer and broadcaster specialising in transport. He was shortlisted as a Labour mayoral candidate in the 2016 London election, and stood as Labour's candidate in the Richmond Park by-election in December 2016.
An ideologically-driven privatisation opposed by even Margaret Thatcher went disastrously wrong.
The Labour candidate on how voters have acted tactically for decades.
It is often claimed the driverless car revolution is imminent. But all the hype obscures more urgent problems.