Danny Moloshok/Reuters
- Elon Musk mentioned Warren Buffett, Nvidia, cyborgs, and "Game of Thrones" on Tesla's earnings call.
- The Tesla CEO said he loves his loyal retail investors, but warned them against margin trading.
- Musk is worried about rising credit-card debt and the bewildering economic backdrop.
Elon Musk touched on everything from cyborgs and "Game of Thrones" to Nvidia and Warren Buffett during Tesla's second-quarter earnings call on Wednesday.