But if only 21 units were connected, doesn't that mean they failed to establish demand? Is there actually a waiting list miles long that they're just not filling?
EDIT: 11,000 reservations through May 2018 according to Bloomberg, currently it’s $1,400 to reserve.
Quoting - On the other hand, Tesla had received about 11,000 customer orders for Solar Roof by May, a backlog that was both encouraging and daunting.
That would be something that could come out of the left field, surprising them after announcement, and the slow trickle of installations is them attempting to iterate the product and make it better.