Quite Possibly one of the most ridiculous things I have come up with yet. All sprouted from a story that leapt into my head from this J. Singer Sargent picture: [link]
And a discussion with Atticus-W over how ferdinand's dream of his mustache being able to fly inspired the zeppelin.
This is a merchant-ship hull that has been hollowed out and replaced with more crew quarters and derricks. The wheelhouse has been elevated up on a big trussed tower, and two specially-built water-tube spiral-tube-to-column-and-header boilers (WHOS CLADDING MAKES THEM LOOK FIRE-TUBE) have been sunk into the superstructure. These feed steam to two immense treaded and articulated drive-units underneath the hull on trusswork. The whole machine can crawl over most land formations at 5 to 7 MPH. It's Mission: to find a gigantic sandstone NOSE buried in the egyptian sands, and retreive it by any means neccesary. Enjoy.