NTSB: Tesla owner got into driver's seat before deadly crash

DETROIT (AP) — Home security camera footage shows that the owner of a Tesla got into the driver's seat of the car shortly before a deadly crash in suburban Houston, according to a government report Monday.

But the preliminary report on the crash that killed two men doesn't explain the mystery of why authorities found no one behind the wheel of the car, which burst into flames after crashing about 550 feet (170 meters) from the owner's home. Nor does it conclusively say whether Tesla's “Autopilot” partially automated driver-assist system was operating at the time of the crash, although it appears unlikely.

The National Transportation Safety Board said it's still investigating all aspects of the crash. An onboard data storage device in the console, however, was destroyed by fire. A computer that records air bag and seat belt status as well as speed and acceleration was damaged and is being examined at an NTSB lab.

The NTSB said it tested a different Tesla vehicle on the same road, and the Autopilot driver-assist system could not be fully used. Investigators could not get the system's automated steering system to work, but were able to use Traffic Aware Cruise Control.

Autopilot needs both the cruise control and the automatic steering to function. Traffic Aware Cruise Control can keep the car a safe distance from vehicles in front of it, while autosteer keeps it in its own lane.

“The NTSB continues to collect data to analyze the crash dynamics, postmortem toxicology test results, seat belt use, occupant egress and electric vehicle fires,” the agency said in its report. “All aspects of the crash remain under investigation as the NTSB determines the probable cause.”

The agency says it intends to issue safety recommendations to prevent similar crashes.

The April 17 crash...