"It kind of works for Venice, it's so nice to be in a car free town with a slow but nice public transport (the vaporettos) so I started to dream about if it would be possible to a similar thing with buses, combined with the existing subway and trams, and just exile all cars."

At this point Venice is basically an open air museum for tourists. It can hardly serve as an example for regular cities that house people who live and work there.