Tesla CFO Zachary Kirkhorn steps down, succeeded by Vaibhav Taneja
- Tesla CFO Zachary Kirkhorn resigned after 13 years with the company.
- Chief Accounting Officer Vaibhav Taneja appointed as new CFO.
- Kirkhorn oversaw Tesla's profitability, debt repayment, and valuation growth.
- Reason for Kirkhorn's departure remains unclear.
- Kirkhorn will aid transition, remain with Tesla through end of year.