For many years now, there has been an active proposal to build a subway that links the Arsenale with the Marco Polo Airport. They call it the Sublagunare.
The Gazzettino yesterday reported that the project has been frozen, for the moment, for reasons that boil down to budgeting priorities.
The scheme has its opponents, as can always be expected in Venice, such as the non-profit group Italia Nostra which claims that a subway would be economically ruinous and would just make it easier for tourists to invade and despoil. Italia Nostra's attitude is that Venice is a "finished work" that needs no modern embellishment.
I almost always take a water taxi into Venice from Marco Polo. After hours in a plane and months away from the city, skimming across the lagoon as Venice slowly reveals herself on the horizon makes me unspeakably happy. If you don't want to pop for the water taxi, there's a cheap accelerato that can be just as cool. But go under the lagoon? Why, exactly? What's the hurry? It isn't London or New York. We're not late for a meeting, or commuting to a Willy Loman bedroom community. It's like asking for a hotel room with a view of the air-shaft and air conditioning units instead of a canale or campo.