https://www.reuters.com/article/us-tesla-crash-autopilot/tesla-ntsb-clash-over-autopilot-investigation-idUSKBN1HJ2JS >Tesla Inc lashed out at the National Transportation Safety Board on Thursday after the agency took the unusual step of removing the automaker as a party to its investigation of a fatal crash in March in which a Tesla vehicle's "Autopilot" system was in use.