Started following Tesla about 2-3 months ago and their stock has already increased from ~$130 to what it is now at $216. Their 52 week range is $36 - $265. They were a good investment, but that train left the station a year ago.
Great company and business model; I could see Tesla being bought by a GM/TM in the future.
Given that possibility, I would not bet against Tesla's prospects, but the current valuation keeps me from buying it.
What's funny is the OP for this thread is from 2012. You would have made an absurd return by now. That said, Tesla's P/E is really high right now. I considered buying it as a long term hold. Either way, it'll be interesting to see where the company goes in the next few years.