I may be late to this, but a friend just called and told me about a presentation Rick did, in conjunction with the Methodist Church, called Travel as a Spiritual Act. It's available on Youtube, https://www.youtube.com/watch?v=DJ3sL-RKnTM and I presume here on the website.
I haven't had a chance to watch it yet, but I've taken a peek and it looks worthwhile. It was supposed to be an hour long presentation, but since he was willing to answer questions from folks who watched it live, it went almost twice that long.
Now I know what we're going to be doing after dinner tonight!