Regardless of when they spend the cash, they would not add the new machine to the PP&E account until they put it into service. That happened in Q1, but the "Machinery, equipment, vehicles and office furniture" line item only grew 255m, from 6,329m to 6,584m.
I'm sure they had tons of engineers setting it up and babysitting it during the ramp, but Tesla charges that cost to R&D. Actual production labor expense should be very low - the whole point of automation is to avoid labor. Even 1000 production workers for a full quarter is only ~20m. That's 250 workers per shift, during a quarter when the machine was mostly being installed. These numbers just don't move the needle.