A lot in that email, but this seemed interesting:
As part of the drive towards 6k, all Model 3 production at Fremont will move to 24/7operations. This means that we will be adding another shift to general assembly, body and paint. Please refer anyone you know who you think meets the Tesla bar for talent, drive and trust. Between Fremont and Giga, Tesla will be adding about 400 people per week for several weeks.
So they have been doing over 2,000 Model 3s per week and not running 24/7 on everything.