Keep learning without your computer

My vacation is moving closer and closer and I am actually looking forward to the annual three weeks completely offline.

As the past two years we are driving to the southern Europe which means I am going to spend many ours behind the wheel.
Time that I usually spend listening to music on the local radio.
As podcasting is getting more and more popular I thought it could be worth looking through the internet for interesting subjects.

I found a couple that I will definitely download:
- Google
- Ajaxian
- Devcasting

Many others are available but I am not sure about the quality.
So let me know if you can recommend any other podcast.

Now only one thing stands between me and my offline knowledge transfer - my girlfriend!
Still thinking on how I can convince her that technology podcasting is so much more interesting for her than listening to the radio :-)