I'm going long on Tesla, but then again, that's my general stock strategy irregardless; I tend not to buy stocks just because I expect to make a killing in short order. I think the company has some long-distance legs and the only thing that would immediately dissuade me of that would be if Musk decided to part ways with the company. I certainly realize he's not the entirety of the business, but I'm coming to realize the importance of charismatic, visionary leaders.
As with the A123 comment, I'm still trying to recover from an early investment in Ballard Power...