1930 "Model J Duesenberg LWB, Hibbard & Darrin Transformable Cabriolet". There were two made. One for the King of Spain and the other for William Randolph Hearst.
To contrast the ridiculously rare and expensive.... the following truck, which to me is equally as cool and unusual.
http://www.teamshelby.com/forums/index.php?showtopic=36851 down the page about 1/3rd before the museum photos. All of the cars here are owned by John Hendricks. He is the founder of the Discovery channel.
