Tesla's robotaxi event was long on Musk promises. Investors wanted more details

Tesla CEO and X owner Elon Musk rides in Tesla's robotaxi at an unveilling event in Los Angeles, California, U.S. October 10, 2024 in this still image taken from video. Tesla/Handout via REUTERS

LOS ANGELES (Reuters) -For a businessman who perpetually struggles with broken promises, Elon Musk gave himself quite a to-do list Thursday night at Tesla's long-awaited Hollywood unveiling of its driverless robotaxis.

His slew of announcements during a 20-minute presentation were short on practical details, which pushed the stock to close nearly 9% lower at $217.80 on Friday.