Some time back, there was a discussion about using a vehicle registered as an RV in business-related
activities.
The Colorado law states that anyone driving a vehicle registered as a non-commercial or RV who uses
it to transport cargo or passengers for profit or hire commits a class B traffic infraction, and the
registration of the vehicle can be cancelled.
So if you're using your bus for business travel and carrying any merchandise on board, you're
skating on thin ice...
I suspect this has a lot to do with the state's desire to collect commercial highway ton-mile
taxes, etc. and force higher registration fees on commercial vehicles.
As usual, it's about the money.

Clarke