The day it started, IIRC, was at the NAIAS when Jerome announced that 2012 Q4 was 'profitable' and that Tesla would continue to grow 'Recklessly' (there was a language issue and he meant to say 'Relentlessly). It corresponded to a triple witch option expiry and the stock jumped and continued to go up. This was confirmed on the Q1 ER so early 2013 saw incredible short squeezing.
To get a true short squeeze you need not only a high short interest (like we have) but a company changing financial event that is unexpected. While evidence of hitting some model 3 guidance production will produce a nice bump in the SP and some squeezing of shorts I doubt we will see 2013 price appreciation, by percentage, again.