Contest Winner Cameo: A man won an auction to have a major character in the novel named after him, then gave it to a friend — the character in question shows up late in the novel, traveling with another group of Maine-bound survivors. In something of a Take That, he kills himself, but he does it to save the group. MASSIVELY. Clay realized the man had rigged explosives in their vehicle to use in case of emergency and then shot himself to avoid the Phoners from over-hearing telepathically. Clay uses the rigged bus to destroy the Phoner convention. Note that for better or for worse, the character almost certainly bears zero resemblance to his Real Life namesake.
Word of God: King confirmed on his website that things turned out all right for Clay's son, Johnny.