Near the end of Disreputable History, the narrator speaks in 1st person singular for the 1st time with "And so, another possibility..." (337). On the same page, the narrator switches from past to present tense with "Frankie Landau-Banks is an off-roader." After that, it's a mix of present and future, and the reader watches the last scene directly ("There's Frankie now..."). What was the intention behind these choices?
Good question! The present-tense just brings the story to a close -- the past-tense things are over, and now we are in the present moment, looking forward to the future. The narrator has been opinionated throughout, and I am not entirely sure this is the first time first person singular is used, but using intrusive narration to reflect is a second way I brought closure to the ending of the story.