As the race for ride-hailing services Lyft and Uber to go public, Lyft co-founder and President John Zimmer believes there is nothing for his company to admire about rival Uber. He admits eliminating car ownership is their biggest business goal, explains why expanding to China is a risky market, and share how the company is committed to improving safety for all its passengers and drivers. He also opens up about the personal struggles he has faced as a Silicon Valley leader. Produced by Haley Draznin, CNN.To learn more about how CNN protects listener privacy, visit cnn.com/privacy