As long as there are people willing to drive a new MH one way and pay for their own way home just for the experience, there's not much of a market for the service. You can count on restrictions during the drive, as well. A set number of days to get there, no smoking, no family, no stopping at attractions, etc.
The same thing happens for private aircraft, only worse. Manufacturers never pay somebody to deliver a plane when there's a line of people waiting to do it for free, just to fly the "new" stuff and log more hours to upgrade their license.