Ceiling-Mounted Subway Maps
GPS System Pinpoints Location on Subway Car Ceilings
Putting the display on the ceiling is most logical for visibility's sake--and to prevent vandalism.
Implications - Many people have fears about getting lost, especially if they are in a city they are unfamiliar with. The featured idea about putting a map of stops on the subways and street cars is a great idea that many businesses can take inspiration from. Even if the business is a large mall or department store, people still like to know where they're headed.