I do that a lot. I have a subscription to Audible and get an audiobook every month. I do 6-10 hours of commuting per week, and they're also great to listen to at the gym. Those are about the only time I've found I can listen to them without getting distracted and missing stuff in the book. Just about any other time, unless I decide to sit in a bath or something, I prefer actual reading.
Anyway, I sit in my car with the engine running (for air conditioning) for 5 or 10 minutes before going into work on a regular basis cos I'm at a good part. NPR refers to them as "driveway moments".
Audiobooks are a great way to reclaim time that you would otherwise lose to rote things like commuting. If I average 8 hours of commute per week and multiply that by 52 weeks in a year by 40 years, and devide that by 24 it tells me that I will spend 693 days commuting. Considering that we don't actually get 24 hour days to ourselves because of sleep I should really have devided it by 16 or 18 hours to reflect that 6-8 hours of each day is lost to sleeping. If I divide by 18 hours, assuming an average of 6 hours of sleep every night, it means that my commute will use up 924 days, or two and a half years of my life. That's two and a half years doing nothing but sitting behind the wheel of a car as the pavement zips by beneath me. That's a lot of time that can be reclaimed and put to use with audiobooks.
And as I mentioned they also can make other time, such as at the gym, even more productive than it already is with little to no effort on your part. I love them.