You can even predict what it will look like before it crashes. A lot of trading is now automated with computers, and calculated sell points are called trailing stops. It's called a trailing stop because the stop trails behind the rising stock price. As the stock price goes up, the trailing stop goes up. Rather than comparing current price to purchase price, a trailing stop compares current price against the peak price. If a price drops 10% or 20% from its peak, that's a sign of ending momentum, and computers will automatically sell the stock using a stop-loss order. In theory, Tesla's stock will eventually see a normal 10-20% decline then a cliff where it drops by a lot as billions of dollars of stock are all trying to be sold at the same time. Then it might have a dead cat bounce where it goes up a little more, followed by another decline.
Predicting the timing is tricky. I'm looking to see how long other bubbles have lasted. NASDAQ's dot com bubble looks like it started in October 1998, peaked in March 2000 (17 months rise). What's neat about looking at the NASDAQ is how the automated sell points jump out. Like clockwork, the index as a whole drops by a large amount as soon as the index dips ~10% below the most recent peak.
July 17, 1998 - 2008.8 peak
August 21, 1998 - 1797 (5 weeks to drop this first 11%)
August 28, 1998 - 1640 (1 week to drop this extra 9%)
March 10, 2000 - 5049 peak
April 7, 2000 - 4446 (4 weeks to drop this first 12%)
April 14, 2000 - 3321 (1 week to drop this extra 25%)
Anyway, Tesla's current run looks like it started around October 26, 2012 (arbitrarily basing this on 100 week EMA). 17 or 18 months of this run would put the estimated peak around April 2014. Of course these are just rough approximations. Not all bubbles are the same. Other good times to crash are this October because third quarter earnings go to the end of September, and next January due to fourth quarter earnings, assuming people actually care about earnings, which is unlikely. Those dot com stocks had a strong run even though none of those companies reported positive earnings.