Staggering sales drops, swastika-daubed EVs, companies culling fleet models, and fan-forum owners selling their cars—Elon Musk's alt-right antics are seriously impacting his electric car business.

Zhang Yazhou was sitting in the passenger seat of her Tesla Model 3 when she said she heard her father’s panicked voice: The brakes don’t work! Approaching a red light, her father swerved around two cars before plowing into an SUV and a sedan and crashing into a large concrete barrier.

Elon Musk thinks Tesla's humanoid robotics business could be worth trillions. Earnings season is in full swing, and, as usual, investors are paying close attention to anything and everything that even remotely touches artificial intelligence (AI).