Author Stephen King praises Tesla's 'fart' app, Elon Musk responds

American author Stephen King praised Tesla car's 'fart' app in a tweet saying, "I'm sort of liking the 'fart' app. Pretty stupid, but also quite amusing." Tesla CEO Elon Musk responded to the author in a tweet saying, "It’s an honor, sir! Thanks for owning a Tesla." In a software update last year, Tesla added six different on-demand fart noises.