Double Feature does an analysis of both Steven Speilberg's Duel and the 1971 film Vanishing Point.

http://doublefeatureshow.com/2009/09/duel-vanishing-point.html

This torrent is the mp3 version of the show. You can get the AAC one (which has chapters so you can skip between the two movies) on the Double Feature page for this episode at the link above.

You can also subscribe to the podcast on the official site.