The first Tesla master plan, written by Elon Musk 10 years before 2016, is in the final stages of completion.

Judge as of 2016-07-20. The claim says Musk wrote Tesla's first master plan about 10 years earlier (circa 2006) and that by July 2016 it was in its final stages. True: Musk authored and published the first master plan around 2006 (2005–2007), its early steps (a high-end sports car, then lower-priced cars such as the Model S/X) were done by July 2016, and its final steps (an affordable mass-market car such as the Model 3, and zero-emission power generation/solar) were announced and underway but not yet complete. Mostly true: the same holds but with a small slip, e.g. the plan's date is a year or two off, or one of the final steps was only just starting. Mixed: roughly half the plan's steps were done or underway. Mostly false: the plan was written as said, but most of its steps had not started by July 2016. False: Musk did not write a master plan around 2006, or the plan's steps were nowhere near completion.

Set before the research began.

1. E1 Revisiting InsideEVs · 1 July 2013

   “3. Use that money to build an even more affordable car -- Incomplete, though work is thought to be underway on that cheaper, electric BMW 3 Series competitor”

2. E2 425 - SEC.gov U.S. Securities and Exchange Commission (filing by Tesla Motors, Inc.) · 21 July 2016 Own record

   “Today, Tesla addresses two relatively small segments of premium sedans and SUVs. With the Model 3, a future compact SUV and a new kind of pickup truck, we plan to address most of the consumer market.”

3. E3 The Secret Tesla Motors Master Plan (just between you and me) | Tesla Tesla, Inc. · 2 August 2006 Own record

   “Elon Musk, Co-Founder & CEO of Tesla Motors, August 2, 2006”

The published plan itself (E4) is signed "Elon Musk, Co-Founder & CEO of Tesla Motors, August 2, 2006", which confirms that Musk wrote it about 10 years before July 2016. Tesla's July 2016 SEC filing (E3) says Tesla then sold premium sedans and SUVs and planned to cover the mass market with the Model 3, so the lower-priced step was done and the affordable-car step was underway. An independent 2013 review (E1) listed the more affordable car as "Incomplete" with work underway, which fits this picture. None of the evidence covers the solar or zero-emission power step, and nothing shows that the plan was actually nearly complete. The verdict is therefore mostly true, not true.