fwiw, I think there are many factors behind this run from $150 to $200.
that said, one I think that has come into play this week is the very strong likelihood that Tesla will give guidance next Wednesday. my understanding is that on average analysts are modelling 31-32,000 units sold for 2014 (one of the analysts said this in an interview, and yahoo finance average revenue estimates for 2014 are consistent with this).
in fact, I doubt any of the analysts think 2014 sales will be below 35,000 (including the Merrill Lynch bear). I suspect Tesla will guide something like 35-37,000 2014 volume.
so, you the Wall Street firms knowing today that Tesla's 2014 sales will be guided 15% higher than their collective forecast (and will probably turn out to be 25+% better at the end of the year), and that this information will be known in a week. wouldn't it make sense for the stock to move up in advance of something so probable just days away? if this is so, 2014 production guidance is being priced in now, wont effect stock when announced. could be other positive catalysts though... most likely one, progress on Giga factory plans, financing, partnerships..., comments about margins continuing to improve through 2014 wouldn't hurt either.