Podiobooks

If you sometimes travel long distances by car you should check out the podiobooks at http://www.podiobooks.com . They have a collection of free audiobooks: once you have registered you get an RSS feed for the podcasts you subscribe for. You can then plug these into your favourite podcast downloader. If you go to the book's feed page, you can select the “release” speed of new episodes into your RSS feed. If you are going on a trip you would probably want to release all at once.

Especially check out Shadowmagic, it's a really great fantasy story with a great narrator, that kept me awake on one of my trips between Belgium and Hungary.