This is a stock that invokes religous fervour. With a 15 bn Market cap it basically makes batteries on wheels which it produces at a loss. It sells these based on upon the right to drive in the bus lane and federal tax credits. I think it is a fair bet to say that it is unlikely to be taken over by Warren Buffet anytime soon. It has gone up like a skyrocket and will probably eventually come down like a stick. However, be very careful as it is often has incredibly high levels of short interest, historically up to 40 days , so it spikes on well orchestrated short squeezes usually precipitated by a series of +ve announcements . The IV is huge (and real) but my major concern in building sensible strategy is the bid/ask spread on the options which seems often to reflect the IV. i wouldnt compare this to AAPL which is way more mature, this is akin to a biotech....