# NHTSA launches new Tesla Full Self-Driving investigation on 2.9 million vehicles revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Incident: [NHTSA launches new Tesla Full Self-Driving investigation on 2.9 million vehicles](/incidents/regulatory-action-2025-10-10-tesla.md)

_No events on file. Arc G is forward-only; the recorded event log accrues from Arc G adoption. For the current state of this incident, see the incident page._

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date.

_Canonical URL: /incidents/regulatory-action-2025-10-10-tesla/history. REST: /v1/incidents/e38ae35c-d801-4001-bbf5-462bba2312b2/history. HTML: [/incidents/regulatory-action-2025-10-10-tesla/history](/incidents/regulatory-action-2025-10-10-tesla/history)._