Why Uber's Travis Kalanick may know something that investors don't

News broke on Christmas Eve that Uber founder Travis Kalanick plans to leave the board of directors at the end of the year after massively selling down his shares over the past few weeks. Joanne Lipman, journalist and distinguished journalism fellow at the Institute for Advanced Study, and Rogers Cheng, executive editor and head of CNET News, join "Squawk Box" to discuss.