I think it's a photoshop job.

The camper is too close to the cab, and the camper is too close to the back bumper. Plus the vertical clearance between the camper and bed would result in interference when crossing a steep driveway entrance.

The lack of apparent balance and the very small wheel size just appear to be off scale, and the trailer color does not match the truck as I would expect a custom job to do.

There also is a lack of landing gear to disconnect the trailer from the truck.