I will be going on a road trip with a 30 year old man, a 21 year old man, and a 3 year old. The 21 year old is a voracious reader who loves T Kingfisher, Robin Wall Kimmerer, enjoyed Neil Gaiman before the allegations came out, and is very interested in medieval European history. Kind of a sensitive soul, low tolerance for dark themes or depictions of bigotry.
The 30 year old is really interested in history; especially agriculture, theater, black history, video games, and the American Midwest. Kind of a contrarian: low interest in YA, likes JRR Tolkien and Hank Green videos.
Both of them will enjoy a book more if it has LGBT characters. Both of them also enjoy upbeat narrative nonfiction books about animals/nature/science.
Any audiobook needs to be something that won't teach the 3 year old profanity or have explicit sex or violence. It doesn't have to be something that interests a toddler (though that would be a plus!) Just not something that will cause problems if she hears it.
So far the only universal success has been the James Herriot series (big hit all around). But we're about to finish the last book and this year we'll spend about 18 hours road tripping around the midwest. Please help!