Now, I no longer drive truck but.....
I'm pretty sure I wouldn't put 250 tons on that trailer and pull it with a normal road tractor as it sits in the picture. I am sure it is special purpose built, but with no evidence of a jeep and the way it is angled up in the back (due to the way it is configured, a higher fifth wheel height than normal) I figured it would take a little bit more than a freightliner to pull it loaded.
While I admire the pictures included of the lowboy, I don't think it compares to the one I posted.
Well, nevermind. I thought it was a cool trailer and it would take a monster truck to pull it, but the professionals say otherwise.
Have a good day. DaveVB