It's a bit different from your traditional 18 wheeler rig.
Why is it built the way it is?
What purpose does it serve the way the wheels are set up? It appears to be a car hauler.
Take a look at the pop up roof on the trailer, kind of cool. It would be nice to have that option installed on a conversion. Lets in a lot of light and fresh air.
Take a look at the swing out door steps on the Freightliner Argosy here:
"I have marveled often at the thin line that divides success from failure and the sudden turn that leads from apparently certain disaster to comparative safety." Ernest Shackleton, Antarctic Explorer, Sea and Land, 1874-1922.