I just was checking out short term option pricing. Currently I find them way too high, and think overall that news of the gigafactory will not affect stock too much. I fully expect the factory to get built and be reasonably on time, and I think others do as well (based on interviews and the fact that groundbreaking is already slightly late, I think they said June?) This presumption is baked into the stock price already, and I feel the only gigafactory news that could effect stock would be negative news...like Panasonic not contributing very much money, or large delays.