The one that sprang immediately to mind was Ann Arbor, Michigan, because I used to live there. But I can come up with more, if you like.<p>Your argument is that mid-sized US cities with densities comparable to European cities are rare, and that this causes pathology. That sounds intuitively defensible, because America definitely has more space to play with for its cities than Europe. But let&#x27;s try to be specific.<p>What&#x27;s a model European city, so we can compare its density to some set of American cities?