I made a pretty penny on FB's earnings last week by betting against a big move. Who knows, might work here too. I think everything comes down to guidance. If they come on and say "We're not going to deliver 55k, only 52k", we will have a huge drop. If they say 'Model X ramp is going faster than expected, we expect 60k deliveries', we will probably see $300.
In the 5 year plan, this is irrelevant, but wall street only looks forward like 3 months.
60K deliveries is highly improbable given there has been no news of Model X yet. I would be happy with recommitting 55K deliveries and have Tesla share their plan of action to reach that number.