Not extensive Autopilot data, but basic vehicle state attributes (speed, throttle, seatbelts engaged, etc). All vehicles have this black box (event data recorder) in their airbag subsystem.
There have only been a handful of Tesla accidents while autopilot was engaged where the vehicle was catastrophically damaged, so it’s a bit of an edge case.
AFAIK, Waymo pays far less attention to road markings than Tesla. Tesla FSD drives like a human, looking through the cameras and trying to figure out where the car is supposed to go in the lane. Waymo relies heavily on super precise mapping to determine where the road is. In theory Waymo should be able to drive correctly with no road markings at all.
The reliance on maps means Waymo can drive in Wayless places, but more reliably in those places.
