Just because it’s from Milan, do we have to take it?

Modern tram (real!) in Milan. Flickr photo by martin97uk
I was literally startled when I saw this photo on a post on Streetsblog, a transit and urban planning-oriented site, showing a modern tram plying the streets of Milan, Italy. At first I thought it had to be photoshopped, but no, it’s real.
Streetsblog suggests using these monsters during commute times. I can’t imagine it helping. While you could load hundreds more passengers onto those long trains, what would happen to the streets crossing Market, given the sometimes short blocks between intersections? Imagine one of those things stretching back from Third St. all the way back to Second, completely blocking the Montgomery > New Montgomery intersection, which is one of only two ways to exit the Financial District during rush hour. Oy!
Ironically, San Francisco already has several streetcars from Milan — the orange “Peter Witt” jobs that still have Italian placards and warnings on the interior. Frankly they’re a lot of fun to ride. I’d save that long, modern tram for, maybe, the T line.
Notice how there are no cars in the picture, only a pedestrian friendly piazza, yet more people are being transported here that on three blocks of Market street at rush hour. If we lived in a city that valued moving people more than cars, maybe a system like this would work.