There is a growing chorus among Tesla bulls saying that if Elon Musk is busy at Twitter, then the car company’s board of directors should be looking to have someone else at the wheel. It seems incredible that Tesla (ticker: TSLA) investors would want Musk’s role diminished at his car company, given that the stock is up 450% since the end of 2019. But shares are also down about 60% from their record of more than $400. , and are off about 55% so far this year. Those declines have wiped out almost $800 billion in market capitalization.