NASA Embraces Urban Air Mobility, Calls for Market Study
https://www.nasa.gov/aero/nasa-embraces-urban-air-mobilityQuote:
Urban Air Mobility, or UAM.
Our definition for UAM is a safe and efficient system for air passenger and cargo transportation within an urban area, inclusive of small package delivery and other urban Unmanned Aerial Systems (UAS) services, which supports a mix of onboard/ground-piloted and increasingly autonomous operations.

