I emailed the Utah DMV and asked about out-of-state registration of UTVs. Here is their reply (not edited):
"You would want to with the City of Moab and see if they are allowing ATV's to be registered and driven on Public roads. You complete this registration you would need a inspection completed by a Public Safety here in Utah. You would have to pay the registration fees that are required for this type of registration. This registration would have to be completed at the local DMV of Moab. My first suggestion is to contact the City of Moab to make sure they will let this be registered. This law was passed for small towns and not ever city will allow it.
If you have any further questions please feel free to contact our Customer Service Department for further assistance at 1-801-297-7780 or 1-800-368-8824.
Thank you,
C. Barber
Division of Motor Vehicles
Utah State Tax Commission"
So, there is "the latest" from here, Chris and Kyle!
Bob