I wonder how long his engineers told him it would ACTUALLY take?
An excerpt from ARS Technica: Tesla has completed construction of a massive 100-megawatt, 129-MWh battery installation in South Australia. The new facility boasts the largest megawatt rating for any grid-connected battery installation in the world.
The project was completed less than two months after the contract was signed on September 29, putting it ahead of schedule. Musk had promised Australian authorities that he would complete the project in 100 days or the project would be free. Musk has said it would cost Tesla "$50 million or more" if the company failed to meet the deadline.
Congratulations to the Tesla crew and South Australian authorities who worked so hard to get this manufactured and installed in record time! https://t.co/M2zKXlIVn3— Elon Musk (@elonmusk) November 23, 2017