In the 1950's the US Army wanted a Land Train. They needed to get supplies to Arctic and desert outposts with few or no roads. So a giant vehicle that could carry up to 150 tons was developed.
I use several kinds of wooden parts I got from Hobby Lobby.
This is a diesel power unit from an HO scale train. I got it used at a train show.
Add the wooden wheels.
And a bit of a cab from a caboose.
Quick mock up version to test the feasibility. It's probably do-able.
EmoticonEmoticon