David, this is a really intriguing question. I reflected upon it last year in response to Tom Webster’s blog.
David, I too have taken to listening to podcasts and books during my commutes, however I am intrigued about what happens during long trips when you are not necessarily alone? Podcasts can be rather personal, do you drive with earbuds or share with everyone else on the trip?
In addition to Audible, I listen to books without narration via the Pocket.and articles via