Grade Spice

Hello, cities, look at your train, now back to mine, now back at your train, now back to mine.

 Sadly, your train doesn't run like mine, but if it stopped using surface streets and switched to an elevated guideway system, it could run like mine. Look down, back up, where are you? You’re on a platform with the train your train could could run like. What’s in your hand, back at me. I have it, it’s two tickets to that thing you love. Look again, the tickets are now diamonds to represent the money you save on drivers. Anything is possible when your train runs on an elevated guideway and not a surface street. I’m on a metro. Hyaaa!

http://www.irse-itc.net/index.php?option=com_content&view=article&id=85%3Asemi-automatic-driverless-and-unattended-operation-of-trains&catid=36%3Apublished-itc-publications&Itemid=29