CRIMSON_DATE
Member
It's far more likely that they are going to be used to fill customer orders and are just heading to different delivery centers until final certification is received and then they can immediately be delivered.
There is no cosmetic difference between this and an existing car so there is no reason for them to swap out the display models that I can think of.
I don't think they would do this until certification was complete. As an example, the structural pack does remove an extra barrier between the battery and the occupents so an accident could result in a fire reaching the occupents faster which is why they need to have the testing done so Until that point I don't believe they would move these cars to anywhere where people can interact with them.