Seriously, guys, I have to throw cold water.
A dozen times in the last month I've found myself saying "Tesla is producing XXXX cars per week", before stopping and correcting myself to say "XXXX Model 3 per week". It's an easy slip-up to make, since Model S and X production is not changing much and nobody is looking at it and it's much smaller than Model 3 production. A few years back, several of us did the same thing when talking about "Tesla's cumulative production of cars", repeatedly forgetting the Roadster production.
Musk is short on sleep and under high stress, and we know his messages don't get vetted by anyone as careful as me. I think we should assume that he meant more than double MODEL 3 deliveries and production, even though he said "cars". It is a *very* easy slip-up to make. Because if you assume that, *all the numbers match up*.