Fremont is still producing Performance 3s, just not in RHD.
Don't see why they couldn't have done a special run, if China couldn't.
It may be that the have converted the assembly lines to LHD only.
I think they were losing a few days of production due to downtime each time they had to switch the line from LHD to RHD.
It wasn’t just a ‘flick of the switch’ as I understand it.