Joe, who used to blog here before he went to Harvard, sent me a link to a great video with Bill Lind, author of Moving Minds: Conservatives and Public Transportation.
It isn't ground breaking stuff, but it seemed apropos given the post below about tunnels. My favorite part in the video where he makes the point that we used to have a private, profitable rail industry in this country. We killed it with massive government intervention and subsidies in the form of highways.
Lind's book is now on my Christmas list.