Not yet, but eventually it will be. The battery pack cases could be SLS assembled (laser sintered) to exacting specifications. Pack disassembly could be automated. Not quite sure on raw material->cell construction though. I'll have to research that process and see if FANUC robotics has anything that would fit the bill for that sort of work
It's fairly unlikely that it'll ever be robots all the way down. If it's not instrumented it can't be measured by automated systems and you can't instrument everything. Management is unlikely to be replaced by robots in the short and mid term.
Which cannot be too far away for that kind of volume.