It’s a fairly mainstream view in Britain that healthcare, as a vital public service we all rely on, should be socially provided, for free, and funded by taxation. Similarly, few people would suggest we ought to have to pay to enter public parks, and accept that these should be “paid for” by taxes and free at the point of use. And despite the substantial marketisation of higher education, many people still hold to the view that education should be free, right through university. So why not transport? Transport is as vital a service as any other; why should something so essential for the...