ALAMEDA COUNTY, Calif. —

The parents of a college student killed in a Tesla crash say she was trapped in the car as it burst into flames because of a design flaw that made it nearly impossible for her to open the door, according to a lawsuit filed Thursday.

The parents of Krysta Tsukahara allege that the company that helped Elon Musk become the world's richest man knew about the flaw for years and could have moved fast to fix the problem but did not, leaving the 19-year-old arts student trapped amid flames and smoke that eventually killed her.

Tesla did not immediately reply to a request for comment.

The new legal threat to Tesla filed in Alameda County Superior Court comes just weeks after federal regulators opened an investigation into complaints by Tesla drivers of stuck-door proble

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