https://www.cnet.com/roadshow/news/tesla-crash-autopilot-data-ntsb-unhappy/

The National Transportation Safety Board told The Washington Post that it was "unhappy" that Tesla divulged additional information about a fatal collision involving a Tesla Model X and a highway barrier. Tesla declined to comment on the NTSB's remarks.

Tesla issued two blog posts regarding the fatal California collision, which took place on March 23. The first blog post looked at the location and attempted to pin some of the reason for the Model X's extensive damage on a modified crash attenuator, which is meant to absorb as much energy from a collision as possible before a vehicle contacts the concrete barrier.