Travis Kalanick needs to hire Sheryl Sandberg to save Uber (FB)

Uber CEO Travis Kalanick is going to try to correct his increasingly erratic management style and rescue the nearly $70 billion value of his company by hiring a COO, Business Insider's Biz Carson reported Wednesday.
Carson says that Uber's precedent for this move is Facebook bringing in Sheryl Sandberg, a Google veteran, to be the adult in the room and get Facebook CEO Mark Zuckerberg in shape for a billion-dollar initial public offering in 2012.
Since then, bringing in a professional COO to get