[jjotto]

Yep. That’s a reefer trailer with the unit from The Road King. They may men the cooling doesn’t work and it was sold as a non-reefer, which would seem common to do.

[HotHunt]

Or maybe someone who bought the "non-refrigerated" trailer, also installed a new reefer unit to haul people?

This guy's family-owned trucking business since the 1950s doesn't sound like the perpetrator. His story about the truck being sold sounds plausible to me.

Let's give him a break until all of the facts are known.