Gilbert Carrasquillo/GC Images
- Ross Gerber said he's a fan of Tesla CEO Elon Musk but warned his lifestyle is unsustainable.
- The Tesla activist investor told Yahoo Finance that he's "pretty concerned" about Musk.
- "The bottom line is running a company like Tesla and being CEO of Tesla is a full-time job."
Tesla CEO Elon Musk's lifestyle is unsustainable, according to activist investor Ross Gerber.
He told Yahoo Finance in a Wednesday interview that while he remained supportive of Musk and his leadership, he is worried about Musk's heavy work schedule that now encompasses leading Tesla and Twitter.