Elon Musk announced his intention to launch a third party, reigniting his feud with Donald Trump and sending Tesla shares spiraling. Max Chafkin and Mark McKinnon discuss on The 11th Hour.

Musk has been able to play off Tesla's struggles for over a year now because the stock has been astonishingly resilient. Neither political gaffe nor falling deliveries has knocked Tesla off its upward trajectory, but Monday's selloff may be a sign of a changing sentiment.