kayne doumani got her attention when she told us a simple oil change led to a $16,000 repair bill. on her way home from the shop, the car broke down on the ramp. the oil filter had been installed backwards, and her engine burned up. she had to buy a whole new engine. >> i can't possibly end up paying for this. that can't be a thing. >> our investigation of kayne's case opened our eyes to a much bigger issue affecting all drivers. it turned out state regulators knew about problems with that shop years before kayne went in for an oil change, but couldn't tell her. tonight at 11:00, we reveal why the state kept its investigation all but secret, and how hundreds of other auto shops are also being investigated yet are allowed to stay open. call us with your consumer complaints, 888-996-tips or visit nbcbayarea.com/responds. i'll see you again tonight at 11:00. >> thanks, chris. 6:25 right now. >>> new this morning, san francisco's set to get a new influx of millionaires. several companies in the city, including uber, lyft, slack have filed for public listings. airbnb and pinterest expec