d5m1x2:

Probably an RV transport company. These are the guys who deliver the RVs from the manufacturer to the dealerships. They’re not allowed to sleep in the trailer so a lot of them get tow vehicles with a sleeper cab so they don’t have to pay for hotels all the time.
I’ve met couples who do this for a living & do pretty well sharing the driving & making shorter turnaround times.

eastcoasternj:

This thing is sweet. Toter does not have an AC it must get crazy hot in that box.

TheRealBobaFettt:

It’s for when your significant other gets in your nerves and you leave the RV

gringo–star:

In alberta canada they allow another trailer to be attached.

Source: Check out this rig. Spotted near Harrisburg PA

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