Why some cities should kick out cars, but others can’t and won’t

Bollore BlueCars recharging at Paris curb for the Autolib electric-car sharing service, Sep 2016U.S. visitors to European cities, especially capitals like Paris and Rome and Madrid and London, often remark how different they are from those in the U.S. Many of their historic cores, dating back far before automobiles existed, remain intact—and for much of the 20th century, they coexisted uncomfortably with those cars and trucks. Now...