@Garlan Garner
side note: Tesla making near 90,000 per quarter (NOT 400,000/Q) - should reach 350,000 min. and close to 400,000 for 2019.
With China coming on line, but in ramp up, we don't know how many they can make by year end.
Batteries, for example, may again/still be the limiting function AND all the other thousands of parts, even tires. AND Model Y is a new model. So China MAY BE mostly #1- prototypes, #2- Engineering Prototypes and then #3- qualifying prototypes. After these prototypes then regular ramp up production can get started.
Battery Packs, batteries, electric motors, inverters/motor controllers, seats, all which Tesla currently makes in US, so ramp up of all these sub-systems may have startup problems.