i think every city in the world should have its own unique and kinda impractical form of public transportation
san fransisco - those funny little trolley cars (implemented)
venice - turn the rivers into a circular white water rafting track (proposed)
lagos - they got little ferries to take you everywhere cause the entire city is on a lagoon (implemented)
los angeles - well the subway is impractical but its not unique or cute so just get rid of the subways and replace them with underground versions of the funny little san fransisco trolley cars