How about a fleet of fully automatic-driving cars? That can deliver goods as well as people? Uber is aiming to replace the automobile in your garage. Currently, to establish themselves, they need to displace taxi cabs for those that already don't drive cars. But their intentions have been clear: a fully automated driving fleet, combined with same-day delivery of packages. Their aiming to disrupt not just the taxi industry, but also the automobile industry and the package delivery industry. The package delivery industry might be leveraged in the future to disrupt the online shopping industry.
Do I think they'll succeed? Honestly, no. But I do understand why all this money is being poured into the variety of taxi cab alternatives out there. This is a lot bigger than just the taxi cab industry.