GM's Cruise Recalls Self-Driving Software Involved in June Crash

After two people were injured in the incident, Cruise blocked its robot
vehicles from making left turns for several weeks before issuing a software
update.

https://www.wired.com/story/gms-cruise-recalls-self-driving-software-involved-in-june-crash

  ...seems following J. Edgar Hoover's orders:

Mr. Schott is a retired special agent. His expose of the bureau includes the
peccadillos of J. Edgar Hoover (who ordered that any vehicle he rode in make
no left turns, hence the title) and the fruitcakes that rose to the rank of
supervisor and/or above.

https://books.google.com/books/about/No_Left_Turns.html?id=NZraAAAAMAAJ

crash cruise june self-driving software