It is metafictional insofar as the automobile mechanic, Mr. Hummel, is linked to Hephaestus, and the  boy‘s father, George Caldwell, is linked to both Prometheus and Chiron.
One of this man‘s more autobiographical novels concerns a boy, Peter, who lives in Pennsylvania with his father, a  science teacher. It is metafictional insofar as the automobile mechanic, Mr. Hummel, is linked to Hephaestus, and the  boy‘s father, George Caldwell, is linked to both Prometheus and Chiron. Other metafictional novels, besides that one,  The Centaur, include a 2000 novel that casts itself as a prequel to a Shakespearean play. Amleth, or Hamlet, is mostly absent from the action in Gertrude and Claudius. FTP, name this recently deceased American man of letters, who also wrote The Witches of Eastwick and a four-volume series on the life of Rabbit Angstrom.
One of this man‘s more autobiographical novels concerns a boy, Peter, who lives in Pennsylvania with his father, a  science teacher.
John Updike