Elon Musk could leave Tesla as CEO if his proposed $1 trillion pay package is not approved, Board Chair Robyn Denholm has warned. The appeal was sent in a letter to shareholders of the electric car company on Monday. It comes ahead of Tesla's November 6 annual meeting, when shareholders are expected to vote on the proposed pay package, the largest of its kind. The proposed performance-based plan was designed to retain and motivate Musk to continue leading Tesla for at least another seven and a half years, Denholm said in the letter. Musk's leadership is "critical" to Tesla's success, she said, and warned that without a plan that properly incentivises him, the company could lose his "time, talent and vision".