Elon Musk's estranged daughter Vivian Jenna Wilson in an interview called Musk an "insecure buffoon" and a "narcissist," and added, "Tesla is not a car company, it's a Ponzi scheme." Citing Tesla's high P/E ratio as evidence, she added, "Look up the P/E ratio and then look at Tesla stock compared to other car companies...Tesla is a ponzi scheme."