 In late 1966, Neville and Sharp were early travellers on what was to become known as the "pot trail" or "the hippie trail" — the overland route from Australia across Asia to Europe.The appendix to Neville's 1970 manifesto "Play Power" acted as the first manual for how to do the overland trail, in advance of any guidebooks in the traditional sense.Neville's sister, the novelist Jill Neville, was already living in London, as was his girlfriend Louise Ferrier.