NHTSA tracks safety information for motorized RVs based on the VINs assigned by the chassis manufacturer, maybe that's what had the potential buyer looking for a Carfax report. But new truck campers seem to now also be assigned 17 digit VINs regardless of whether they have a motor or not. My 2022 Palomino has a nifty 17 digit "ID" they call a "Vehicle I.D. No." (sure sounds like a VIN) even though nobody considers it a "Vehicle." In fact, my state uses that number on my TC's state issued title. It seems to me that this gives Carfax the ability to charge even more people $35 for useless reports in the future by tracking these numbers in the future with their existing framework. Ain't progress a wonderful thing?