The Goose was brought from factory(s) to its flight point in pieces.
Apparently wings bolt on.
As best I can learn, to get to the museum in OR it went in pieces by sea barge then up the Columbia River, then up the Willamette River - probably under bridges in Portland OR, then last 7.5nm by land using truck-trailer.
(A thought: with wings and tail off perhaps the Mars would be lower laid on its side, just a guess.)