A growing number of people have been suggesting a "removable" center tablet for the interior of the model ≡. I have a strong feeling that although this sounds great for many reasons, it will not be implemented, at least not this time around...
In present form, this screen is not only the brain of the interior, it's also the only input/output device for the entire UI (user interface), "It is the alpha and the omega". The tablet screen is the most critical element in the interior of the car, because it's essentially replacing everything but the cup holders, steering wheel and pedals. The car can't function without it (currently).
There are many ways for something bad to happen to this "tablet" once it leaves the car; without this UI functioning, the car becomes a brick.
Some potential solutions to this concern could be:
Employ a "duplicate monitor" feature, where users could have multiple screens paired to the UI. This would allow for some interesting entertainment possibilities inside the car, and could serve as a back-up in the event of some catastrophe that rendered the primary screen useless. Try to make it compatible with "most" android and IOS devices.
Allow Cellphones to be paired to the UI; this could work both for entertainment and as a worst-case primary UI.
Sell the cars with a "spare UI" in the frunk :) , the same way that we are used to having a spare tire and jack in our ICE equivalents. It could be ~9" display (think undersized spare).
There is potential for wonderful benefits from a removable UI; taking all of ones' interior preferences, audio/climate preferences, schedules, etc. around with you on the screen. It could also serve as a "key" in a Tesla network, where owners simply take their screens around and plug them into random cars throughout a city. This concept would compete with the user-sharing concept that Volvo has designed into the next generation keyfob.
tl;dr The Idea of a removable UI Interface is a great one, but humans break things and this car becomes a brick without it, so unless you have 3 or 4 types of "Back-up" for this primary screen, the risks far outweigh the rewards.