Fatal Tesla crash under investigation, unclear if Model X was in autopilot mode

After the driver of a Tesla Model X died in a fiery crash on a Bay Area freeway last week, federal and local authorities are investigating what happened.
The crash on Highway 101 near Mountain View, California, last Friday looked gruesome with the front half of the electric SUV destroyed in the crash and subsequent fire. 
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National Transportation Safety Board spokesperson Christopher O'Neil said in a ph