0
See exact text of law above. I don't see how that counts as 'operation'. Riding it off the truck, sure. But it seems like it is totally acceptable to put it in the truck and leave the state. The more realistic scenario is a test lap around the yard after putting the carb back on. Now that's an interesting question. I don't think track bikes count as recreational vehicles by their definition but I could see that one being disputed.
''Recreation vehicle'' or ''off-highway vehicle'', any motor vehicle designed or modified for use over unimproved terrain for recreation or pleasure while not being operated on a public way as defined in chapter 90 including, but not limited to, all-terrain vehicles, off-highway motorcycles, dirt bikes, recreation utility vehicles and all registered motor vehicles while not being operated on a public way as defined in said chapter 90; provided, however, that recreation vehicles and off-highway vehicles operated exclusively for agricultural, forestry, lumbering or construction purposes shall not be subject to this chapter and it shall be an affirmative defense that such vehicle was being operated for such purposes at the time of an alleged violation of this chapter.
I think the key is 'unimproved' terrain though if we really want to go full legalese, I wonder if a moto track really counts as unimproved if it isn't already defined elsewhere in Chapter 90.