Just saw Lance's guys designing this on OLN. It is the bike they put together for the time trial leg through the mountains during the tour.
http://www.cyclingnews.com/tech.php?id=photos/2004/tech/probikes/armstrong_madone_ssl/cn04-ssl.04
http://www.cyclingnews.com/tech.php?id=photos/2004/tech/probikes/armstrong_madone_ssl/cn04-ssl.04