What examples of intertexts are in The Road by Cormac McCarthy?

Let us begin by considering what an intertext is.
Intertexts can be defined as refering to the presence of texts within a text. It is
relevant to our discussion that myth is often a common example of intertext in various
stories, as is shown by the way that mythic archetypes can be identified in many other
texts.

Clearly, with this text, there appear to be two main
intertexts related to mythic archetypes. The first is that of the journey. The father
and his son in this text, like so many other characters, embark on a form of an odyssey,
in this case trying to reach a place of greater safety where they can maximise their
chances of survival. However, linked in with this is the second intertext, which focuses
on the relationship between the father and the son and the dynamics between them. This
is much deeper than it might appear to be on the surface, as although the father is
ostensibly the protector and guide of his son, there are many ways in which the son is
shown to also guide his father, as is indicated by the dream that the father has in the
very opening section of the novel:

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In the dream from which he'd wakened he had
wandered in a cave where the child led him by the
hand.

As we read the novel we
can see the truth in this dream, as the child metaphorically "guides" the father just as
much as the father guides and looks after his son, though the child seems to focus more
on maintaining his father's sense of moral goodness.