Venice people mover

This thing just came up in my head. It's a kinda subway but it's not. And it has no driver.

Venice, July 2011
When the man at the train station told us about the 'people mover', we had no idea what to expect. A bus? A train? A moving walkway?
Then i asked what it was. That's the moment the proud Italian train man freaked out.
"Iffe you lette me finish, I can tell you exactely......" (fonetic Italian voice lol)

All those memories about my Interrail holiday last Summer are starting to come back these days. Maybe i need a holiday.