It's just a joke. (And a dumb one, sorry!)
But the biggest problem with the people mover it's almost useless. It doesn't go to and from places people want to go to and from. As you found, the best reason to ride it is idle amusement, and then only if it's free. It's like the guy who keeps up a boat but has trouble scraping together the rent and doesn't even live near a lake.
If Detroit was a dynamic growing city, it could find its use. Since often major buildings, services are built next to transit hubs.
If such a thing say went Broadway - 42th - (Park or Madison) - 57th (the central part of upper midtown) in NYC It would be fully occupied all the time (they may even need to make the buggies double sized