Frank Herbert’s Dune series is fun for LONG trips. Also, we enjoy listening to Michael Crichton when we can find one of his books on CD. Tom Clancey is excellent as well.
Crichton and Clancy — do they have sex scenes in their books? We do want something in that genre. Dune is more science fiction, no?
I can read a million reviews on Amazon, but the reviewers are not going to mention scenes that are in there, and I’ve read enough mysteries to know that there can be stupid things about how the detective finds himself “reacting” to the lovely blonde witness, in detail, etc...
Any of the W.E.B. Griffin series (I’m partial to the current “Presidential Agent”) are really excellent - there’s the occasional veiled and tasteful sexual reference, but nothing tender ears will be corrupted by.
Colonel, USAFR