Even so, that's just using a cart and a hired one at that. I mean the analogy of a horse to a car (as in something you owned personally and rode around on) was

Even so, that's just using a cart and a hired one at that. I mean the analogy of a horse to a car (as in something you owned personally and rode around on) was never really true, at least in cities. Also, speaking of London, the Underground is surprisingly old -- the first parts of the system opened in 1863. Yes, Sherlock Holmes is often depicted as going by hackney, but had he really existed, he could have ridden the Tube.