N.K. Jemisin, The Fifth SeasonRead about another entry on the list.
I mean sure: there’s no car. But there’s definitely a trip, and sometimes even a road. That is, until a Season comes, and then there’s really no counting on roads of any kind, or on the Earth to do anything you think it’s going to do. Still, there are some definite road trip markers here: unexpected strangers, wrong turns, a quest that shifts as suddenly and violently as the ground beneath these characters’ feet. It’s a deeply satisfying journey that will also, as a side note, make you think about how much gas you’re using. Plus, this is only the first in a trilogy, with the final book appearing in August, which makes it perfect to fuel a long trip.
Also see Steph Post's ten classic (and perhaps not so classic) road trip books.
--Marshal Zeringue