I see. It’s not just a bailout, to stave off SolarCity’s looming demise, though it is partially about that. It’s also expected to be profitable, because they could consolidate SolarCity’s sales operations into Tesla’s existing showrooms, and sell a complete package that’s more attractive than solar panels or PowerWalls on their own.

Not entirely contradictory with my previous guess; being profitable by laying off the sales department is basically saying the company will not soon be profitable by itself; but Musk is so certain that it’s a good deal for the respective companies that he’s promising to recuse himself from the vote.

The other interesting aspect is that they don’t expect the sale to close and the details to be official for several months. It’s actually near the beginning of the negotiating process, with due diligence and stuff yet to be done. Since Musk is a large shareholder of both companies, they decided to announce it publicly this early.