On ancient roads and in medieval alleyways in London, a very modern battle is brewing. The city’s black cabs will soon be competing with artificial intelligence-powered, autonomous taxis. But London’s cabbies aren’t about to hand over their keys. After all, just to get a license, they've already proven their own kind of intelligence, studying, often for years, to pass a 161-year-old test called “the Knowledge.” They memorize 25,000 streets, and thousands of landmarks and businesses. And know the shortest routes between them all. Anderson Cooper reports. Sunday on 60 Minutes. #robotaxi #cabbie #london