I think there is at least a $100 of valuation coming. The DEADLINE for that is the model 3 in production with real volume, adding to the financial top line in a big way. So that is, at best, mid 2018, not so far away really. I don't think the stock will suddenly jump from 220 to 320 in a day on the deadline, but when will it go up? Between now and then there is just a lot of spending, build out, risky production starts etc. There will be small to medium positives for sure, but the BIG MAMA good news will be financial receipts from model 3 that validate the long term secret plan, and permanently shift Tesla Motors from a risky upstart to a mid-major manufacturer.
Heck $200 of valuation raise is in play.