Can Mordenkainen’s Faithful Hound be made mobile by casting it on a mobile surface?


The description of the Mordenkainen’s faithful hound spell says, in part:

You conjure a phantom watchdog in an unoccupied space that you can see within range, where it remains for the duration, until you dismiss it as an action, or until you move more than 100 feet away from it.

If I were to cast Mordenkainen’s faithful hound to conjure the hound on a wagon, or on Tenser’s floating disk, would the hound then be able to follow me around and remain active for it’s 8 hour duration?