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”. Subscribe here: http://bit.ly/1rbfUog For more news, analysis and features visit: www.bbc.com/news