Making the most of your commuting time

How many hours a day do you spend in the car? Have you extrapolated that figure for the year? My figure is just under 400 hours a year. How do you spend that time? Presumably most people will answer with listening to the radio or your own music.

Recently I have realised that there are lots of options for making better use of that time and I have been amazed at how much learning can be done in my commute when previously I would have just been listening to Radio 2.
So here are different ways you can build up your knowledge, rack up a huge amount of CPD and be entertained while driving to and from work:

Audiobooks.
I have 2 sources for my audiobooks. My local library allows free downloads via the overdrive app. Not surprisingly they don't have any dental audiobooks available but they have a pretty decent business and motivation section. That was how I came across the Zero to One audiobook by Peter Thiel (review here: www.drchrisharper.co.uk/blog/book-review-zero-to-one-by-peter-thiel)
The second source for my audiobooks is Amazon's Audible app. They have the biggest collection of audiobooks to buy worldwide so lots of suitable material. That was how I came across the Ask Gary Vee book (review here: http://www.drchrisharper.co.uk/blog/book-review-ask-gary-vee).
Audible is not free (although they do offer a 30 day free trial which allows you to get one free audiobook too). There are various membership plans starting from £7.99 per month and that allows you to purchase one audiobook for free every month, no matter what it would usually cost. Additional books can be bought at their individual price. On my list of books to read in the near future are these as well as many others:
4 disciplines of execution
The E-myth revisited
Black box thinking
Extreme ownership

Podcasts
There are lots of podcasts you can choose. Obviously loads of motivational ones, however if you want dental specific podcasts I would recommend trying The Dental Guys, Dentalpreneur and Dental Hacks to start with.

​And one more potential source of audio material I have discovered is via Dentinal Tubules. While most of their content is video or written articles they have an archive of audio as well. Have a look here: http://www.dentinaltubules.com/browse/audio

If you have found any other ways of making the most of your commute I would love it if you could share it here so others can benefit from it to.