If you're traveling alone, then honestly just pick whatever audio book you want! But if you're traveling with others, you probably want to find something more agreeable to everyone.
There are several ways to get audiobooks. The easiest is probably Audible, which has a huge selection and allows you to purchase the audio books so you have them in your collection permanently. It can also automatically sync and integrate with your Alexa devices to continue the audio book at home.
Pro Tip for Audible: If your friends or family also use Audible, they can share a book they've purchased for free to you and vice a versa. This only works once per account combination, but is a great way to save a little money when you have a book recommendation.
That can add up though so if you're looking for a cheaper option, check out Libby. You'll need a library card from your local library and can browse their selections from the app. The selection can be more limited and you have to wait on other customers for more popular titles, but the app works great with Bluetooth, Android Auto or Apple CarPlay.
Pro Tip for Libby: You can toggle between multiple libraries. So if you're like me and have lived in multiple places, you can often keep your old library card and use the one for your new location. It is dependent on the library, though, and how they renew their membership. Also, I'm pretty sure the Los Angeles library doesn't check for residence, and that has a huge selection. But I didn't tell you that.
Through my employer, I also have access to Percipio which is a little clunkier, as well as Coursera and LinkedIn Learning for more academic-style courses. Finally, a last possible option from in the "old days" and less and less of an option now is to borrow physical media CDs from the library or purchase them. Really old school, one of my libraries had a little independent player device for each audio book that connected via a headphone jack. But with Bluetooth and apps so prevelent and becoming moreso, I'd stick to those.
Without further ado, here are some audiobook ideas I can recommend for roadtrips that may appeal to all parties.
Jurassic Park - Most people know the movie and it's premise, and could recognize the gorgeous musical theme by legendary composer John Williams. But how many have actually read the original book? This was a good one that my now-ex and I listened to on our epic road trip, and I was surprised he (not being a reader) endured the whole thing. That speaks volumes to its universal appeal.
Cheaper by the Dozen - Nothing like the movies you've seen by the same name (unless you have seen the OG 1950 movie), this book is a true story of the original efficiency expert, Frank Gilbert, who fathered the field in which I now work, Industrial Engineering. As told by two of his children, the tale weaves through the quirky parenting of the dozen Gilbreth children and comically illustrates their parents' great professional achievements. If you're a parent or want to be, there may be some nuggets of wisdom you may take away.
Life, Unscheduled - This is an easy romance read but it describes Idyllwild, an area not too far from my home in Palmdale, in such a blissful way that I took a weekend trip to experience it for myself. I could relate to the main character also in how she schedules things and tries to do it all and how life can be overwhelming sometimes.
The Escape Artist: The Man Who Broke Out of Auschwitz to Warn the World - As the name implies, this is a true story that mostly takes place in the concentration camp and provides some humane insight into how these events could be allowed to happen, as well as the triumph of this escapee who helped shed light on the horrors happening at the end of the train line. Not a cheerful roadtrip read, for sure, but I think it appeals to a broad audience wanting to learn and understand a dark part of our world's history.
The Ride of a Lifetime: Lessons Learned from 15 Years as a CEO of the Walt Disney Company - A business book the whole family can relate to, this book covers the major decision points and challenges of Bob Iger's command as the head of one of the most beloved brands and companies.
Your Perfect Year - Part mystery, part romance novel, this is another easy read of hope and sickness and love.
Drunk Tank Pink: And Other Unexpected Forces that Shape How We Think, Feel and Behave - This is a conversation starter with lots of quirky and largely unknown anecdotes of things you wouldn't normally think about.
The Blue Zones: Lessons for Living Longer From the People Who've Lived the Longest - An interesting read about how people live in different regions. This book could also be a good conversation starter and perhaps inspire some lifestyle changes.
Traffic: Why We Drive the Way We Do and What It Says About Us - I debated putting this one on the list because it could induce more road rage on a road trip, but I really like this book in general and figured some of the insights and applications may be helpful on the road trip.
Pimsleur Language Lessons - If you're doing a road trip over a longer time period (i.e. not just a weekend), you may want to consider language lessons. I'm a big fan of Pimsleur - it's all audio so you can do it while you drive. You can get Pimsleur lessons for several languages from the library and/or on Libby. We did this with the Japanese language in preparation for an upcoming trip to Japan. For me, it was more of a review and brushing up, and for him, it was learning for the first time, so we went at his pace and repeated lessons as he felt he needed. But we could practice together afterwards while driving and listening to music.