Elon Musk speaking at an event.
Tesla CEO Elon Musk has long promised an Uber-like ride-hailing service.
  • Tesla is reportedly pushing back its robotaxi day to October.
  • The move would throw doubt on one of Tesla's most important promises.
  • Tesla's stock fell as much as 6% following the news of the delay.

Tesla is reportedly pushing back its robotaxi event to the fall, according to a report from Bloomberg on Thursday.