I thought that is a rule in most states? Most states are calling motorhomes used to transport anything used to make money a commercial vehicle subject to the same regulations as a typical commercial vehicle. Even a motorhome pulling a trailer with a race vehicle in it is considered commercial if the race has a cash purse.
So my regular minivan is a commercial vehicle? Because I regularly transport my music gear in there. What about if I bring my laptop home from work in my car? I use it to make money at work.