The CEO of Uber-competitor Gett tells why he thinks humans will be banned from driving in the future

At the start of December, Stephen Hawking issued a stark warning: Automation and AI are going to destroy middle-class jobs, risking massive political upheaval. "The automation of factories has already decimated jobs in traditional manufacturing," the famed physicist wrote, "and the rise of artificial intelligence is likely to extend this job destruction deep into the middle classes." It's an issue that Shahar Waiser knows about first-hand: In the coming years and decades, almost his entire workforce will become obsolete. The Russian-born entrepreneur is the CEO of Gett -- a taxi app used by thousands of cabbies in more than 100 cities around the world. And all of their jobs are at risk of being replaced by self-driving cars.