I StmbledUpon a blog post entitled "Huge Off-Highway Road Trains."
It was incredible how huge they were; but I wanted to point out one of them in particular.
This thing is huge, short, flat, slow and can carry anything, no exaggeration. If the item to be transported fits somewhere on this earth, the Mammoet can transport it.
The thing is made to fit together like giant Lego blocks. Every one of the 24 wheels on each section rotates 360 degrees allowing the "truck" to go sideways, circular, diagonal etc.
Wait, why am I describing this? Watch it for yourself. (It starts about halfway through.)
These things are so great, the company sells models of them.