No other major American city has taken such a giant leap in terms of permanently closing such a large portion of its downtown to vehicular traffic. What if Boston did the same thing?
Such a move would help Boston meet its own stated goals of eliminating pedestrian deaths and reducing pollution so much as to render the city carbon-neutral by 2050—never mind that, contrary to some concerns, the evidence suggests that banning cars downtown would not necessarily hurt businesses there.
Plus, Boston has been a municipal first in the U.S. in many ways—first public park, first public school, first public library (there’s even talk of first free public transit system). So what about first to ban cars in its downtown?