The document discusses the emerging market for passenger drones, also called urban air mobility. It begins by providing context on the rapid growth of the drone market in general. Passenger drones aim to provide on-demand air transportation within cities as an alternative to ground transportation. Several companies are developing passenger drone technologies and prototypes, with some having completed test flights. Market analysts predict strong growth in the passenger drone market over the coming years, with estimates of a 30-35% compound annual growth rate that could result in a market size of $21-26 billion by 2023-2035. Regulations and infrastructure will need to be established to support urban air mobility services at scale.