They haven't fully revealed it yet. Pretty soon they'll have another event with the final version, and they'll be all over the media again. Expect enthusiasm to skyrocket. I don't think they'll have any problem selling 500,000 per year or more. Certainly not when the first test drive reports come in.
Support services is another matter, I don't know what they're doing on that front, but I'm pretty sure someone will have thought of it. They're pretty nimble, so I think you'll see Tesla service centers popping up or expanding everywhere at a very rapid rate once the first deliveries start. They shouldn't need quite as much support as regular cars, anyway. And it's a much simpler car than model S or X. No problems with retracting door handles, falcon wing doors, etc.