alt Hacker NewsMaybe because in airports people are sometimes required to walk long distances to go from one point to another, while in a city there are public transport, bicycles, taxis, etc. plenty of other options so walking long distances is usually not required.
I think moving sidewalks could be more suitable for shorter distances than public transport or taxis. In many situations, it doesn’t make sense to order a taxi for a trip of less than 1,000 meters, or to walk to the nearest bus stop, then wait for the bus, just to travel a single stop. There are many people with disabilities who may struggle to walk these distances and would benefit from such an option. Additionally, moving sidewalks could reduce the time it takes to travel short distances within cities.