Short, two-sider in which Neal, tired and under the influence of drugs, talks a way along a railway line in Mexico, and has a visitation, and is given a choice.

With Kerouac and Kesey mentioned, and it being 1968, Powell gives more than enough for many readers over 50 to be going on with, but others under 25 will probably only be vaguely aware of the background to the story. Wikipedia quite helpfully fills in the blanks, which, alongside the story, whets the appetite in terms of looking back half a century, to times when individuals horizons were being chemically expanded. Hit the cosmic road, Neal.