I like the speed and age of the car from Two Lane Blacktop in comparison to the Millenium Falcon, but I suppose a van does fit the cargo aspect.
The more I think about it, I don't see Han "driving" anywhere. He is a guy who wants to really travel. Might be getting away from the original idea for this thread, but perhaps something more versatile like an old seaplane. I'm sure he would have "Millenium Falcon" painted on the side.
[url]http://i91.photobucket.com/albums/k304/rodneyfaile1973/Catalina-Grumman-Goose_zps74dfba91.jpg[/URL]
PBY at Palm Springs...