• The move comes as Tesla and CEO Elon Musk are implementing settlements with the Securities and Exchange Commission, which have stemmed from Musk's early August statements about the subsequently aborted plan to take Tesla private.
• The settlements require Tesla's board to have more independence from Musk and forces the company to impose new oversight of his shoot-from-the-hip Twitter style.

The big picture: CNBC notes that Butswinkas arrives as Tesla is dealing with a series of other regulatory and legal challenges.

• And more broadly, the company is also transitioning into a bigger and more global player as it ramps up production of the Model 3 and plans to build a new factory in China.

What they're saying: According to Tesla's announcement, the move completes a transition plan for Maron that began in July.

• Butswinkas, meanwhile, said Tesla presents an "inspiring" opportunity: "Tesla’s mission is bigger than Tesla — one that is critical to the future of our planet. It’s hard to identify a mission more timely, more essential, or more worth fighting for," he said.
• According to Bloomberg, Musk first tapped Butswinkas as an outside attorney to help with the SEC case.

Go deeper:

• Tesla picks Robyn Denholm as new board chair
• Tesla rolls out executive promotions amid turmoil
• Tesla is bleeding top executive talent