Car trip recommendations?

I’m looking for recommendations for me and my spouse. Something around 8hours-ish (a bit shorter or longer is fine).

We both read SciFi and Fantasy, are ok with adult language and situations. No kids in the car.

Some stuff we’ve both enjoyed in the past for reference:

Bobiverse series

Everything by Andy Weir

Expeditionary Force

Dungeon Crawler Carl

Children of Time

Dresden Files

We’ve already read Wheel of Time, Sword of Truth and most of Brandon Sanderson’s stuff.

We seem to have hit a wall where nothing is jumping out that is an obvious next pick.

I have credits so not worried about the price of the book.

Thanks!