Uber introduces updated safety features

According to The Economist, "few companies offer something so popular that their name becomes a verb". But that's exactly what has happened to Uber - the world's most valuable start-up. The taxi service recently launched self-driving cars in the US and back at home, announced safety improvements for riders and drivers. It also launched the trial of an in-vehicle SOS button in Johannesburg. Should the pilot prove useful this feature could be introduced to the other cities across South Africa and Sub-Saharan Africa? Alon Lits, GM at Uber SA joins CNBC for more on this and why #UberCupCakes was trending.