UberAIR is well on its way, with the plan to start demonstrating the technology in 2020 and start operating the flying taxi service in 2023. In order to get there, it's going to need what Uber is calling "Skyports" -- areas for these electric vertical take-off and landing vehicles to board and unload passengers. On day two of Elevate, Uber's architect and design partners revealed their concepts for skyports. All skyport concepts are required to be able to support more than 4,000 passengers per hour within a three acre footprint. The skyports must also ensure electric VTOLs can easily recharge in between trips.