So I hate when people quote themselves, but making an exception now to add 2 more scenarios.
Leaving S/X prediction as is for now, so 2017 gross profit 2.7Bn for those.
M3 Scenario 1: as above, revenue 3.6Bn, profit 360m
M3 Scenario 2: volume 150k, ASP 45k, margin 15% = revenue 6.75Bn, profit 1Bn
M3 Scenario 3: volume 200k, ASP 45k, margin 15% = revenue 9Bn, profit 1.35Bn
So even in middle case, S/X/3/TE could very well make 4Bn gross profit. Even if operating expenses go from 500m to 750m (more stores, SCs), that leaves 1Bn in the bank.
Looking ahead to 2018, with S/X unchanged (which it won't be as decreasing cell costs and increasing production efficiencies on X will drive margins even higher even if volume plateaus...) here are 2 scenarios for M3:
M3 Scenario 1: volume 300k, ASP 40k, margin 12% (more average specced cars) = revenue 12Bn, profit 1.44Bn
M3 Scenario 2: volume 450k, ASP 40k, margin 15% (improved production) = rev. 18Bn, profit 2.7 Bn, a.k.a. equals S+X