A Tesla whistleblower who has battled Elon Musk and his company through the courts for a decade tells BBC News she is still seeking a public apology.

Engineer Cristina Balan was once such a rising star at Tesla in the US that her initials were engraved on the batteries inside every Model S electric car.

But after raising a safety concern about a design flaw which could affect the cars’ braking in 2014, she claims management turned hostile, and she lost her job.

She won a wrongful dismissal case but was later publicly accused by Tesla of using its resources for a “secret project”.

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