The beauty of panicking early.
"Now, will we actually be able to achieve volume production on July 1 next year? Of course not," he said on Tesla's earnings call. "In order for us to be confident of achieving volume production of Model 3 by late 2017, we actually have to set a date of mid-2017 and really hold people's feet to the fire, internally and externally."http://www.bloomberg.com/news/articles/2016-05-09/elon-musk-s-tesla-strategy-win-big-by-falling-short