So here is a list compiled from my Goodreads account:
First off non-Ficton
Now fiction. It's short because when I think of road trip books [that I've broadened to travel accounts by any means] I do think in terms of someone traveling to real places by real means. Otherwise most science fiction and fantasy books might qualify.
I have read all of these. Some I selected myself. Some were recommended by others or a choice of a book club, including the two running at this site. Some I liked, Some I didn't, but that should not necessarily deter you as some have high Goodread ratings or were enjoyed by others.